Learning about Language公开课教案

Unit 3 重点句型讲解

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1.... it took nearly two hundred years before I was built as an analytical machine by...

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差不多到了两百年之后，我才被……制成了一台分析机。

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本句中的before为连词，可译为“过了多长时间才……”。

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归纳拓展

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(1)It was/took ... before ...(从句中用过去时态)，意为“过了多长时间才……”。

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(2)It will be/take ... before ...(从句中用一般现在时表将来时)，意为“要过多长时间才……”。

(3)It is/has been＋一段时间＋since ...(从句用一般过去时)，意为“自从……到现在已经……时间了”。

即时应用

完成句子。

①They walked very slowly and ________ ________ ________ ________ ________ ________

they reached their destination. 他们走得很慢，差不多两个小时后他们才到达目的地。

②________ ________ ________ ________ ________ the situation came back to normal. 很多年后这种形势才恢复正常。

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③It will be a long time ________ he comes back. •

要过很长时间后他才能回来。

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④________ ________ ________ ________ ________ the second earthquake happened. •

不久第二次地震就发生了。

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答案：①it took nearly two hours before

②It took many years before

③before

④It was not long before •

2．And my memory became so large that even I couldn't believe it.

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我的存储量变得如此之大，甚至连我自己都不能相信。

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so ... that ... 如此……以至于……，引导结果状语从句。

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归纳拓展

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(1)so ... that ... 句型的主要结构有：

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①so＋adj./adv.＋that ... •

②so＋adj.＋a/an＋单数可数名词＋that ... ③so＋

many/much/little(少的)/few＋n.＋that ... •

(2)such ... that ...句型的主要结构有：

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①such＋adj.＋不可数名词＋that ... •

②such＋a/an＋adj.＋单数可数名词＋that ... •

③such＋adj.＋可数名词复数＋that ... (3)so，such修饰的成分置于句首时，主句常用倒装语序。

即时应用

完成句子。

①Keeping a learning diary every day ________ ________ ________ ________ I would like to introduce it to you. 每天坚持写学习日记是如此重要所以我想把这种学习方法介绍给你们。

②(2013·福建)As a consequence, children ________ ________ ________ ________ ________ ________ ________ they have no independent thought or creative ideas. 结果是孩子对于父母变得如此依赖以至于他们没有独立思考的能力和创造性的想法。

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③她是一个如此聪明的姑娘，我们都喜欢她。

She is ________ ________ ________ ________ ________ we all like her. ＝

She is ________ ________ ________ ________ ________ we all like her. ＝________ ________ ________ ________ ________ ________ ________ we all like her. ＝________ ________ ________ ________ ________ ________ ________ we all like her. 3．As time went by, I was made smaller.

随着时间的推移，我被做得更小了。

as意为“随着”，引导时间状语从句。

辨析

as/ with

词语

as

with

“随着”，是连词，引导时间状语从句

“随着”，是介词，后接名词或代词等构成with短语或with复合结构

含义

即时应用导学号

01830301

(1)选用上述单词填空

①________ the wealth of the country increasing, more waste will be produced. ②________time went by, Einstein's theory proved to be correct. •

(2)完成句子。

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①________ ________ ________ ________ ________ ________ ________，

the supply of food becomes more and more of a concern. •

随着世界人口的不断增加，食品供应问题越来越受到人们的关注。

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②________ ________ ________ ________，

I gradually adapted myself to the school life. •

随着时间的推移，我逐渐适应了学校生活。