高中英语Module3BodyLanguageandNonverbalCommunicationSectionⅢGrammar条件状语从句和让步状语从句教学案

Module 3 Body Language and Non-verbal Communication Section

Ⅲ Grammar-条件状语从句和让步状语从句

语法图解

探究发现

①If you say the word “communication”， most people think of words and sentences.

②In case there is a fire, what will you do first? ③You won't arrive there on time unlessyou take a plane. ④Even if you were busy, you should take care of your family. ⑤Clever as he is, he doesn't make great efforts in his lesson. ⑥However much I tried, I couldn't work the question out.

⑦He keeps taking physical training in winter no matter howcold it is. ⑧Although/Though she works very hard, yet (still) she makes very slow progress. [我的发现]

(1)①②③句中，黑体部分引导条件状语从句；④⑤⑥⑦⑧句中，黑体部分引导让步状语从句。

(2)由③句可知，在条件状语从句中，主句用将来时，从句用一般现在时代替一般将来时。

(3)⑧句中 although/though 引导让步状语从句不与 but 连用，但可以与 yet 或 still 连用。

(4)由⑤句可知，as 引导让步状语从句且置于句首时，从句用倒装语序。 (5)⑥⑦句中，however 和 no matter how 都引导让步状语从句，两者可以换用。

一、条件状语从句 1．条件状语从句的引导词

引导条件状语从句的词/短语有：if (假设，如果), unless (除非), so/as long as (只

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要), suppose/supposing (that)(倘若，假设); only if (只有……才), provided/providing (that)(如果), on condition that (条件是), in case (如果，万一), when (如果；既然，考虑到)。

IfTom passes the examination, his father is going to buy him a bicycle. 如果汤姆考试及格，他父亲将会给他买一辆自行车。 You may watch TV as long asyou finish your homework. 只要你做完作业，你就可以看电视。

Suppose/Supposing the plane does not arrive on time, what shall I do? 假定飞机不能准时到，我该怎么办？

How can they learn anything when they spend all their spare time watching television?

既然他们把所有空闲的时间都用来看电视了，还能学到什么东西呢？

Only ifyou take an active part in physical activity will you be able to keep fit and stay healthy.

只有积极参加体育锻炼，你才能保持身体健康。

Unless one is fully prepared, outdoor sports can sometimes mean injuries. 要是没有充分准备的话，户外运动有时会意味着受伤。 2．主将从现

条件状语从句如果表示将来的时间，用一般现在时代替一般将来时。 I won't wait for him unless he calls me. 除非他给我打电话，否则我不会等他。

[即时演练1] (1)完成句子

①(2015·北京高考改编)You won't find paper cutting difficult as_long_as_you_keep_practicing_it (只要你不断地练习)．

②(2015·北京高考改编)Once_the_damage_is_done (一旦农田被毁坏), it will take many years for the farmland to recover.

③(2014·

湖

南

高

考

改

编

)You

will

never

gain

success

unless_you_are_fully_devoted_to_your_work (除非你全身心地投入到工作中去)．

④(2014·

四

川

高

考

改

编

)I'll

be

out

for

some

time.

In_case_anything_important_happens (万一发生了什么重要的事情), call me up immediately.

(2)单句语法填空

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①(2015·江苏高考改编)It is so cold that you can't go outside unless fully covered in thick clothes.

②(2015·陕西高考改编)I believe you will have a wonderful time here once you get to know everyone else.

③I told him he would succeed only if he tried hard.

④I'll let you have the book on condition that you return it to me next week. ⑤(2014·大纲卷改编)Unless some extra money is_found (find), the theatre will close.

3．状语从句的省略

在时间、条件、让步等状语从句中，当从句主语与主句主语一致或从句主语是 it，从句的谓语部分含有be动词时，可以将从句中的主语与be动词一起省略。

If exposed to very loud music every day, young people may risk going deaf. 如果年轻人每天都处于嘈杂的音乐的影响中，他们很可能有变聋的危险。 If (it is) possible, this machine can be changed for a new one. 如果可能的话，这台机器会换成一台新的。

While (she was) listening to the radio, she fell asleep. 她在听收音机时睡着了。 4．祈使句＋and/or＋陈述句

“祈使句＋and/or/or else/otherwise＋陈述句”句型中，祈使句在意义上实际上相当于条件状语从句。

Give me all your money, and I'll let you go. ＝If you give me all your money, I will let you go. 给我你所有的钱，我就放你走。

Run fast, oryou'll be late for school.

＝If you don't run fast, you'll be late for school. 快点跑，要不然你就上学迟到了。

[即时演练2] (1)单句语法填空

①(2015·湖南高考改编)Video games can be a poor influence if left (leave) in the wrong hands.

②He won't go there unless invited (invite)． ③He picked up a wallet while walking (walk) home.

④(2014·大纲卷改编)Call me tomorrow and I'll let you know the lab result.

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