《Teenagers should be allowed to choose their own clothes》PPT課件9
Review
Talk with your classmates about your school rules by using “students are not allowed to…”.
一般現在時(shí)的被動(dòng)語(yǔ)態(tài)
在英語(yǔ)中，動(dòng)詞有兩種語(yǔ)態(tài)，即主動(dòng)語(yǔ)態(tài)和被動(dòng)語(yǔ)態(tài)。被動(dòng)語(yǔ)態(tài)的基本結構是“助動(dòng)詞 be + 及物動(dòng)詞的過(guò)去分詞”，其中助動(dòng)詞be有人稱(chēng)、數和時(shí)態(tài)的變化,其變化規則與be作為連系動(dòng) 完全一樣。
1.一般現在時(shí)被動(dòng)語(yǔ)態(tài)的各種句式結構
肯定式 主語(yǔ)+am/is/are+過(guò)去分詞（ + by…)
否定式 主語(yǔ)+am/is/are + not +過(guò)去分詞 (+by…)
疑問(wèn)式 Am/Is/Are+主語(yǔ)+過(guò)去分詞(+ by …)?
特殊疑問(wèn)詞+ am/is/are+主語(yǔ)+過(guò)去分詞（+ by ...)?
2.一般現在時(shí)被動(dòng)語(yǔ)態(tài)的基本用法
表示經(jīng)常性或習慣性發(fā)生的被動(dòng)動(dòng)作
I am often asked the question by my pupils.
表示近期正在發(fā)生的被動(dòng)動(dòng)作
These days people are moved by a teacher named Zhang Lili.
描述某種常態(tài)化的被動(dòng)的客觀(guān)事實(shí)
The spaceship is mainly controlled by computer.
強調目前存在的針對行為主體人的被 限制性動(dòng)作
You aren’t allowed to take photos.
3.主動(dòng)語(yǔ)態(tài)變?yōu)楸粍?dòng)語(yǔ)態(tài)的方法
第一步:將主動(dòng)語(yǔ)態(tài)的賓語(yǔ)改為被動(dòng)語(yǔ)態(tài)的主語(yǔ)；
第二步:將主動(dòng)語(yǔ)態(tài)的謂語(yǔ)改為“be+及物動(dòng)詞的過(guò)去分詞”結構；
第三步:將主動(dòng)語(yǔ)態(tài)的主語(yǔ)改為介詞by的賓語(yǔ)，放在謂語(yǔ)之后(有時(shí)可省略)。
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Rewrite the sentences according to the example.
1. You must clean your bedroom every day.
Your bedroom must be cleaned every day .
2. Parents should encourage teenagers to do social work for their community.
Teenagers _____________________________ .
3. Can Lucy do her homework tomorrow instead?
Can__________________________________ ?
4. Do you think we must keep teenagers away from the Internet?
Do you think teenagers__________________________ ?
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Language points
1. Do you think teenagers should be encouraged to make their own decisions? 你認為應該鼓勵青少年自己做決定嗎？
make one’s own decision 意為“自己做決定”，相當于make a decision for oneself。
例：I just want to make my own decision.我只想能夠自己做決定。
2. Parents should give teenagers chances to make their own decisions. 父母應該給青少年自己做決定的機會(huì )。
chance (a suitable time or situation when you have the opportunity to do sth.) 可數名詞，意為“機會(huì )；機遇”，其后可接to do sth.或of sth.。若表示“做某事對某人來(lái)說(shuō)是一次機會(huì )”，其后可接for sb. to do sth.。
例：I never miss a chance to play football.我從不錯過(guò)踢球的機會(huì )。
It’s a good chance for you to meet.這是一個(gè)你們見(jiàn)面的好機會(huì )。
3. This way, when they _______(start) working they can manage their own lives.
這樣，當他們開(kāi)始工作時(shí)，他們能應付他們自己的生活。
manage 意為“完成(困難的事);應付(困難) 局面”， 其后可接名詞、代詞或動(dòng)詞不定式。
例：I’m not sure how we will manage it.
我不確信我們將如何完成這件事。
You should manage to finish the work in time.
你應該設法及時(shí)完成工作。
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Homework
Master what you have learned in this lesson. Learn to make sentences with “情態(tài)動(dòng)詞+be+及物動(dòng)詞的過(guò)去分詞”.
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