| Situation | Pattern | Example |
|---|
| 1. Continuous Tenses | be + -ing | I am working. |
| 2. After Prepositions | prep + -ing | interested in working |
| 3. After Certain Verbs | verb + -ing | enjoy working |
| 4. As a Noun (Gerund) | -ing as subject/object | Working is important. |
| 5. After “go” | go + -ing | go shopping |
| 6. After Expressions | expression + -ing | can’t help doing |
| 7. As Adjective | -ing adjective | interesting book |
| 8. After “spend/waste time” | spend time + -ing | spent hours debugging |
| 9. After “have fun/trouble” | have trouble + -ing | had trouble finding |
1. Continuous Tenses (进行时)#
Pattern: be + verb-ing
This is the rule you already know! Used for actions in progress.
Work Scenarios#
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| I **am working** on the migration.（Present Continuous）
We **were debugging** when the server crashed.（Past Continuous）
By 5 PM, I **will have been coding** for 8 hours.（Future Perfect Continuous）
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Daily Life#
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| She **is cooking** dinner right now.
They **were watching** TV when I called.
I **have been learning** English for 2 years.
|
2. After Prepositions (介词后)#
Pattern: preposition + verb-ing
Rule: In English, if there’s a verb after a preposition, it must be in -ing form.
Work Scenarios#
Common Preposition + -ing#
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| **interested in** + -ing:
"I'm **interested in learning** Kubernetes."
（我对学习 Kubernetes 感兴趣）
**good at** + -ing:
"She's **good at debugging**."
（她擅长调试）
**responsible for** + -ing:
"I'm **responsible for managing** the security team."
（我负责管理安全团队）
**used to** + -ing:
"I'm **used to working** under pressure."
（我习惯在压力下工作）
**instead of** + -ing:
"We deployed on Friday **instead of waiting** until Monday."
（我们在周五部署，而不是等到周一）
**by** + -ing:
"You can improve performance **by optimizing** queries."
（你可以通过优化查询来提升性能）
**before/after** + -ing:
"**Before deploying**, always run tests."
（部署前总是要运行测试）
"**After reviewing** the code, we merged it."
（审查代码后，我们合并了它）
**without** + -ing:
"We fixed the bug **without restarting** the server."
（我们修复了 Bug 而没有重启服务器）
**about** + -ing:
"We're **thinking about migrating** to AWS."
（我们在考虑迁移到 AWS）
**of** + -ing:
"What do you **think of using** GraphQL?"
（你觉得使用 GraphQL 怎么样？）
**for** + -ing:
"This tool is **used for encrypting** data."
（这个工具用于加密数据）
**on** + -ing:
"**On arriving** at the office, I checked my emails."
（一到办公室，我就检查了邮件）
**in** + -ing:
"We succeeded **in completing** the migration on time."
（我们成功按时完成了迁移）
**at** + -ing:
"He's skilled **at writing** secure code."
（他擅长编写安全代码）
**with** + -ing:
"We have a problem **with accessing** the database."
（我们在访问数据库方面有问题）
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Daily Life#
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| "I'm **thinking about buying** a new laptop."
（我在考虑买新笔记本）
"She's **afraid of speaking** in public."
（她害怕在公共场合演讲）
"He's **good at playing** basketball."
（他擅长打篮球）
"I'm **used to getting** up early."
（我习惯早起）
"**Before going** to bed, I always read."
（睡前我总是读书）
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Common Mistake#
❌ Wrong:
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| I'm interested in learn Kubernetes.
（错误：介词 in 后必须用 -ing）
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✅ Correct:
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| I'm interested in **learning** Kubernetes.
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3. After Certain Verbs (特定动词后)#
Pattern: verb + verb-ing
Some verbs are always followed by -ing, not infinitive (to + verb).
Work Scenarios#
List 1: Common Verbs + -ing#
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| **enjoy** + -ing:
"I **enjoy working** with new technologies."
（我喜欢使用新技术工作）
**avoid** + -ing:
"We should **avoid making** the same mistake."
（我们应该避免犯同样的错误）
**finish** + -ing:
"I **finished writing** the report at midnight."
（我午夜完成了写报告）
**mind** + -ing:
"Do you **mind working** on weekends?"
（你介意周末工作吗？）
**suggest** + -ing:
"I **suggest reviewing** the code before merging."
（我建议合并前审查代码）
**recommend** + -ing:
"I **recommend testing** in staging first."
（我建议先在预发布环境测试）
**consider** + -ing:
"We're **considering migrating** to the cloud."
（我们在考虑迁移到云端）
**keep** + -ing:
"The server **keeps crashing**."
（服务器一直在崩溃）
**practice** + -ing:
"I **practice coding** every day."
（我每天练习编程）
**imagine** + -ing:
"Can you **imagine working** without internet?"
（你能想象没有互联网工作吗？）
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List 2: More Verbs + -ing#
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| **admit** + -ing:
"He **admitted making** a mistake."
（他承认犯了错误）
**deny** + -ing:
"She **denied sharing** the password."
（她否认分享了密码）
**discuss** + -ing:
"We **discussed implementing** the feature."
（我们讨论了实现这个功能）
**mention** + -ing:
"He **mentioned having** the same issue."
（他提到过有同样的问题）
**miss** + -ing:
"I **miss working** with that team."
（我想念和那个团队一起工作）
**quit** + -ing:
"He **quit smoking** last year."
（他去年戒烟了）
**risk** + -ing:
"We can't **risk losing** customer data."
（我们不能冒着丢失客户数据的风险）
**tolerate** + -ing:
"I won't **tolerate cheating**."
（我不会容忍作弊）
**understand** + -ing:
"I **understand wanting** more time."
（我理解想要更多时间）
**appreciate** + -ing:
"I **appreciate hearing** your feedback."
（我很感激听到你的反馈）
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Daily Life#
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| "I **enjoy reading** books."
（我喜欢读书）
"She **avoided answering** the question."
（她避免回答问题）
"He **finished eating** dinner."
（他吃完晚饭了）
"Do you **mind opening** the window?"
（你介意开窗吗？）
"I **suggest going** to the new restaurant."
（我建议去那家新餐厅）
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Common Mistakes#
❌ Wrong:
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| I enjoy to work with new technologies.
（错误：enjoy 后必须用 -ing）
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✅ Correct:
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| I enjoy **working** with new technologies.
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4. As a Noun / Gerund (作为名词/动名词)#
Pattern: -ing form can be the subject or object of a sentence.
Work Scenarios#
As Subject (作主语)#
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| "**Working** remotely has many benefits."
（远程工作有很多好处）
"**Learning** new skills is essential in IT."
（学习新技能在 IT 行业很重要）
"**Debugging** can be time-consuming."
（调试可能很耗时）
"**Deploying** on Fridays is risky."
（周五部署有风险）
"**Writing** clean code requires practice."
（编写整洁的代码需要练习）
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As Object (作宾语)#
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| "I enjoy **coding**."
（我喜欢编程）
"She loves **teaching**."
（她热爱教学）
"They discussed **merging** the teams."
（他们讨论了合并团队）
"We talked about **launching** a new product."
（我们讨论了发布新产品）
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After Possessives (在所有格后)#
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| "I appreciate **your helping** me."
（我很感激你帮助我）
"**Their delaying** the project caused problems."
（他们推迟项目导致了问题）
"**His leaving** the team was unexpected."
（他离开团队是出乎意料的）
"Do you mind **my asking** a question?"
（你介意我问个问题吗？）
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Daily Life#
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| "**Swimming** is good exercise."
（游泳是很好的运动）
"**Reading** improves your vocabulary."
（阅读能提升你的词汇量）
"I love **traveling**."
（我喜欢旅行）
"She enjoys **cooking**."
（她喜欢做饭）
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Common Mistake#
❌ Wrong:
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| Work remotely has many benefits.
（错误：动词不能直接作主语）
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✅ Correct:
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| **Working** remotely has many benefits.
（正确：用 -ing 形式作主语）
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5. After “go” (在 go 后)#
Pattern: go + -ing
Used for activities, especially sports and leisure.
Work Scenarios#
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| "Let's **go networking** at the conference."
（我们去会议上社交吧）
"We should **go shopping** for office supplies."
（我们应该去买办公用品）
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Daily Life#
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| "I **go swimming** every weekend."
（我每个周末去游泳）
"She **goes shopping** on Saturdays."
（她周六去购物）
"They **went hiking** last Sunday."
（他们上周日去徒步了）
"Let's **go bowling** tonight."
（我们今晚去打保龄球吧）
"We **go camping** every summer."
（我们每年夏天去露营）
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Common Activities#
- go swimming（去游泳）
- go shopping（去购物）
- go hiking（去徒步）
- go camping（去露营）
- go fishing（去钓鱼）
- go skiing（去滑雪）
- go jogging（去慢跑）
- go dancing（去跳舞）
- go bowling（去打保龄球）
- go surfing（去冲浪）
6. After Certain Expressions (特定表达后)#
Work Scenarios#
“can’t help” + -ing#
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| "I **can't help wondering** why it failed."
（我不禁想知道为什么失败了）
"She **can't help thinking** there's a better way."
（她不禁认为有更好的方法）
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“look forward to” + -ing#
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| "I **look forward to meeting** you."
（我期待见到你）
"We **look forward to working** with you."
（我们期待与你合作）
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Note: “to” here is a preposition, not part of infinitive!
“be busy” + -ing#
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| "I'm **busy debugging** the issue."
（我正忙着调试问题）
"She's **busy preparing** for the presentation."
（她正忙着准备演示）
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“be worth” + -ing#
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| "It's **worth checking** the logs."
（值得检查日志）
"The book is **worth reading**."
（这本书值得读）
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“have trouble/difficulty” + -ing#
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| "I'm **having trouble connecting** to the database."
（我在连接数据库方面有困难）
"We **had difficulty finding** the root cause."
（我们很难找到根本原因）
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“spend/waste time” + -ing#
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| "I **spent 3 hours debugging** this issue."
（我花了 3 小时调试这个问题）
"Don't **waste time arguing** about it."
（不要浪费时间争论它）
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“feel like” + -ing#
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| "I **feel like quitting**."
（我想辞职）
"Do you **feel like going** for lunch?"
（你想去吃午饭吗？）
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Daily Life#
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| "I **can't help laughing** at his jokes."
（我不禁被他的笑话逗笑）
"I **look forward to seeing** you again."
（我期待再次见到你）
"She's **busy cooking** dinner."
（她正忙着做晚饭）
"The movie is **worth watching**."
（这部电影值得看）
"I **spent all day cleaning** the house."
（我整天都在打扫房子）
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Common Mistake#
❌ Wrong:
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| I look forward to meet you.
（错误：这里的 to 是介词，后必须用 -ing）
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✅ Correct:
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| I look forward to **meeting** you.
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7. As Adjective (作为形容词)#
Pattern: -ing form can describe nouns, showing what something is or does.
Work Scenarios#
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| "an **interesting** project"（一个有趣的项目）
"a **challenging** task"（一个有挑战的任务）
"an **exciting** opportunity"（一个令人兴奋的机会）
"a **confusing** error message"（一个令人困惑的错误信息）
"the **leading** company"（领先的公司）
"an **existing** system"（现有系统）
"**upcoming** features"（即将推出的功能）
"**missing** data"（缺失的数据）
"**running** processes"（正在运行的进程）
"**pending** tasks"（待处理的任务）
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Daily Life#
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| "an **interesting** book"（一本有趣的书）
"a **boring** movie"（一部无聊的电影）
"an **exciting** trip"（一次令人兴奋的旅行）
"a **surprising** result"（一个令人惊讶的结果）
"**falling** leaves"（落叶）
"**boiling** water"（沸水）
"**sleeping** baby"（熟睡的婴儿）
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-ing vs -ed Adjectives#
Key difference:
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| -ing adjective = describes what something IS or DOES（描述事物的特性）
-ed adjective = describes how someone FEELS（描述人的感受）
Example:
"The movie was **boring**."（电影很无聊 - 描述电影的特性）
"I was **bored**."（我很无聊 - 描述我的感受）
"The presentation was **exciting**."（演示很令人兴奋）
"We were **excited** about the presentation."（我们对演示感到兴奋）
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Work Examples#
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| "The meeting was **confusing**."（会议很令人困惑）
"I was **confused**."（我很困惑）
"The task is **challenging**."（任务很有挑战性）
"I feel **challenged**."（我感到有挑战）
"The news was **surprising**."（消息很令人惊讶）
"We were **surprised**."（我们很惊讶）
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8. Reduced Relative Clauses (简化定语从句)#
Pattern: -ing form can replace “who/which/that + verb”
Work Scenarios#
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| Full: "The developer **who is working** on the API is Alice."
Reduced: "The developer **working** on the API is Alice."
（正在开发 API 的开发者是 Alice）
Full: "The server **that runs** on Linux is down."
Reduced: "The server **running** on Linux is down."
（运行在 Linux 上的服务器宕机了）
Full: "The feature **which was requested** by users is live."
Reduced: "The feature **requested** by users is live."
（用户要求的功能已经上线）
Full: "The logs **that show** errors are in this file."
Reduced: "The logs **showing** errors are in this file."
（显示错误的日志在这个文件中）
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9. After “There is/are” (在 There be 后)#
Pattern: There is/are + noun + -ing
Work Scenarios#
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| "**There's someone waiting** for you."
（有人在等你）
"**There are several issues needing** attention."
（有几个问题需要注意）
"**There's a server crashing** repeatedly."
（有一个服务器反复崩溃）
"**There are multiple teams working** on this."
（有多个团队在做这个）
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Quick Reference: All Situations#
Summary Table#
| Situation | Pattern | Example | Key Point |
|---|
| 1. Continuous Tenses | be + -ing | I am working. | action in progress |
| 2. After Prepositions | prep + -ing | interested in working | always -ing after prep |
| 3. After Certain Verbs | verb + -ing | enjoy working | memorize verb list |
| 4. As Noun/Gerund | -ing as subject/object | Working is important. | -ing = noun |
| 5. After “go” | go + -ing | go shopping | activities |
| 6. After Expressions | expr + -ing | look forward to meeting | memorize expressions |
| 7. As Adjective | -ing adj | interesting book | describes things |
| 8. Reduced Clauses | -ing replaces who/which | The man working here | simplification |
| 9. After “There is/are” | There is + noun + -ing | There’s someone waiting | existence |
Common Mistakes Summary#
Mistake 1: After Prepositions#
❌: interested in learn
✅: interested in learning
Mistake 2: After Certain Verbs#
❌: enjoy to work
✅: enjoy working
Mistake 3: “look forward to”#
❌: look forward to meet
✅: look forward to meeting
Mistake 4: After “go”#
❌: go to shop
✅: go shopping
Mistake 5: As Subject#
❌: Work remotely is good.
✅: Working remotely is good.
Memory Tricks#
1. Preposition Rule#
“PreP + -ing” (Preposition + ing)
- Think: “PreP” needs “PreP-aration” (-ing)
2. Verb List Mnemonic#
Enjoy Avoid Finish Mind Suggest
- “EAFMS verbs always take -ing”
3. “to” Test#
- If “to” is part of infinitive (to + verb) → use base form
- If “to” is a preposition (look forward to) → use -ing
Test: Can you replace with “towards”?
- YES → It’s a preposition → Use -ing
- NO → It’s infinitive → Use base form
Example:
- “look forward to” = “look forward towards” ✅ → Use -ing
- “want to” ≠ “want towards” ❌ → Use base form
4. Adjective Rule#
- -ing = what it is (active, causing feeling)
- -ed = how you feel (passive, receiving feeling)
“The movie is boring” (it causes boredom)
“I am bored” (I receive the feeling)
Practice Exercises#
Exercise 1: Fill in the Blanks#
- I’m interested in ___ (learn) Kubernetes.
- She enjoys ___ (work) with new technologies.
- We should avoid ___ (make) the same mistake.
- I look forward to ___ (meet) you.
- ___ (work) remotely has many benefits.
- Let’s go ___ (shop) this weekend.
- I spent 3 hours ___ (debug) this issue.
- The server keeps ___ (crash).
- I’m busy ___ (prepare) for the presentation.
- There’s someone ___ (wait) for you.
Answers:
- learning (after preposition “in”)
- working (after “enjoy”)
- making (after “avoid”)
- meeting (after “look forward to” - to is preposition)
- Working (as subject/gerund)
- shopping (after “go”)
- debugging (after “spend time”)
- crashing (after “keep”)
- preparing (after “busy”)
- waiting (after “there is”)
Exercise 2: Identify the Rule#
- “I am working on a project.” → Continuous Tense
- “I’m interested in learning.” → After Preposition
- “I enjoy coding.” → After Certain Verb
- “Working is important.” → As Noun/Gerund
- “Let’s go shopping.” → After “go”
- “I look forward to meeting you.” → After Expression
- “It’s an interesting book.” → As Adjective
- “I spent hours debugging.” → After “spend time”
Final Summary#
All -ing Situations:
- ✅ Continuous Tenses: be + -ing
- ✅ After Prepositions: prep + -ing
- ✅ After Certain Verbs: enjoy/avoid/finish/mind/suggest/recommend + -ing
- ✅ As Noun/Gerund: Working is important.
- ✅ After “go”: go shopping/swimming
- ✅ After Expressions: look forward to/can’t help/be busy + -ing
- ✅ As Adjective: interesting/boring/exciting
- ✅ Reduced Clauses: The man working here
- ✅ After “There is/are”: There’s someone waiting
Key Rules to Remember:
- After preposition → ALWAYS -ing
- After “be” → -ing (continuous)
- Certain verbs → memorize the list
- “to” can be preposition → look forward to -ing