Unit 5 What are the shirts made of Grammar Focus同步优化训练-2025-2026学年人教版2012九年级英语全册
Unit 5 What are the shirts made of? Grammar Focus
知识点拨
1.什么是被动语态?
英语中有两种语态:主动语态和被动语态。
主动语态表示主语是动作的执行者。
如: The students clean the classroom every day. 其中谓语 clean 的动作是由主语 the students来执行的。
被动语态表示主语是动作的承受者,即行为动作的对象。
如: The classroom is cleaned by the students every day. 主语 the classroom 是动词 clean的承受者。
2.被动语态的构成:
被动语态由“助动词 be+及物动词的过去分词”构成。人称、数和时态的变化通过 be的变化表现出来。
一般现在时的被动语态结构: am/ is/ are+ done。
一般过去时的被动语态结构: was/ were+ done。
一般将来时的被动语态结构: will/ shall be+ done或 am/ is/ are going to be+ done。
现在进行时的被动语态结构: am/ is/ are being+ done。
过去进行时的被动语态结构: was/ were being + done。
现在完成时的被动语态结构: have/ has been + done。
情态动词的被动语态结构: (can, will, must ...) be done。
3.被动语态的用法:
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(1)不知道或没有必要说明动作的执行者是谁。
如: Some mobile phones were stolen last night. 一些手机昨晚被盗了(不知道被谁盗了)。
(2)强调动作的承受者,而不强调动作的执行者。
如: Your homework must be finished on time. 你们的家庭作业必须及时完成。
4.含有情态动词的被动语态:
含有情态动词的主动句变成被动句时,由“情态动词+be+过去分词”构成。
We can repair this TV in two days. →This TV can be repaired in two days.
They should do it at once. →It should be done at once.
语法专练
一、单项选择
1.The Monkey King is a traditional Chinese cartoon hero. Today, he ________ still ________ by people of all ages.
A.will; love B.was; loved C.is; loved D.will; be loved
2.I ________ TV on Sundays, but on weekdays I can’t watch TV.
A.am allowed watch B.am allowed to watch
C.allow watch D.allow to watch
3.Nowadays, Chinese ________ by more and more foreigners.
A.was learned B.learned
C.is learned D.has learned
4.All children ________ to do more exercise and grow up healthily.
A.expected B.will expect
C.were expected D.are expected
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