2019屆高考英語第一輪復習專項教案
當你穿越馬路時，你越小心越好。
即境活用
改寫句子
①when he was walking in the street，he came across one of his friends.
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②though i am tired，i believe running does us a lot of good.
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③he never speaks to others unless spoken to.
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答案：①when walking in the street，he came across one of his friends.
②though tired，i believe running does us a lot of good.
③he never speaks to others unless he is spoken to.
2....but your friend can't go until he/she finishes cleaning his/her bicycle...
但是直到你的朋友清洗完他(她)的自行車他(她)才能去。
●用法拓展
until直到……為止，not until直到……才。肯定形式表示的意思是“做某事直至某時”，動詞必須是延續性的。否定形式表達的意思是“直至某時才做某事”。動詞為延續性或非延續性都可以。
①i slept until midnight.
我一直睡到半夜才醒了。
(在肯定句中可用before代替。let's get in the wheat before the sun sets.)
②don't get off the bus until it has stopped.
公共汽車停穩后再下車。
③i didn't manage to do it until you had explained how.
直到你教我后，我才會做。
●特別提示
(1)not until...在句首，主句用倒裝。
①not until the early years of the 19th century did man know what heat is.
直到19世紀初，人類才知道熱能是什么。
②not until i began to work did i realize how much time i had wasted.
直到我開始工作，我才意識到了我已蹉跎了多少歲月。
(2)it is not until...that...是一個強調結構。
it is not until he comes back that i will leave.
直到他回來我才會離開。
(3)until when疑問句中，until要放在句首。
—until when are you staying？你呆到什么時候？
—until next monday.呆到下周一。
即境活用
翻譯句子
直到他的父親睡著他才敢回家。
①強調句________________________________________________________________________
②倒裝句________________________________________________________________________
答案：①it was not until his father had fallen asleep that he dared to go home.
②not until his father had fallen asleep did he dare to go home.
3.i wonder if it's because i haven't been able to be outdoors for so long that i've grown so crazy about everything to do with nature.
我不知道是不是因為自己長久無法出門的緣故，我變得對一切與大自然有關的事物都無比狂熱。
●用法拓展
此句中的it's...that是強調句型。
(1)強調句型的基本結構：強調句型“it is/was＋被強調的成分＋that/who＋其他成分”用來強調主語、賓語和狀語等成分。that只起連接作用，不作成分，但不能省略。當被強調部分為人作主語時可用who，也可用that，其他情況一律用that。強調主語時，that后的謂語動詞必須與被強調的主語人稱和數保持一致。