Unit8 语法详解及练习2025-2026学年仁爱科普版八年级英语下册
仁爱英语八下 Unit 8
语法详解与练习
- 以 -ate 结尾的动词：去掉词尾的 -e（或 -te），再加 -ion
communicate → communicat- + -ion → communication
educate → educat- + -ion → education
create → creat- + -ion → creation
- 其他动词：直接在词尾加 -ion
act → action
protect → protection
discuss → discussion
collect → collection
invent → invention
这类名词多为抽象概念（不可数），少数为可数名词（如 action, invention）。
在句中可作主语、宾语、表语。
例：
作主语：Communication is important in teamwork.
作宾语：We need to take action to protect the environment.
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If + 一般现在时，主语 + 一般将来时/情态动词/祈使句
条件在前时，需加逗号；主句在前时，无需逗号。
- If + 一般现在时，主语 + 一般将来时
例：If I get pocket money, I will save it in the bank.
- If + 一般现在时，主语 + 情态动词（can/may/should）
例：If you save enough, you can buy a new bike.
- If + 一般现在时，祈使句
例：If you go to the supermarket, buy some milk for me.
条件从句必须用一般现在时表将来，不能用 will。
❌ 错误：If I will have time, I will go.
✅ 正确：If I have time, I will go.
主语为第三人称单数时，动词需加 -s/-es。
例：If he comes early, we will start the meeting.
- act → ___________
- communicate → ___________
- protect → ___________
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- discuss → ___________
- collect → ___________
- create → ___________
- invent → ___________
- educate → ___________
- predict → ___________
- connect → ___________
- The ___________ of the new app helps people work more efficiently.
A. invent B. invention C. inventing
- We need to have a ___________ about the trip plan.
A. discuss B. discussion C. discussing
- The ___________ of the environment is everyone’s duty.
A. protect B. protection C. protecting
- Good ___________ can solve many problems between friends.
A. communicate B. communication C. communicating
- The ___________ of the new museum will open next month.
A. create B. creation C. creating
- The ___________ of stamps is his hobby for years.
A. collect B. collection C. collecting
- The ___________ of the new policy will bring changes.
A. act B. action C. acting
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