?新概念英语3、4册连读 ?巩固+提升
1. 在when,whenever,while,until,as soon as等引导的时间状语从句中,可以省略与主句中主语相同的主语和系动词或助动词。
When (he was) a child he ran wild. 他小的时候很不守规矩。
They were scolded whenever (they were) late for school.每次上学迟到,他们都要挨骂。
While (he was) in prison,he wrote his first novel.他在狱中写出了第一部小说。
As soon as (I am) on board I always feel sick. 我一上船就感到恶心。
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2. 在if,unless,once等引导的条件状语从句中。
If (it is) not well organized,the meeting will be a failure.如果组织不好,会议就会失败。
Substances have no tendency to expand unless(they are) heated.除非受热,物质不会有膨胀的倾向。
Once (she was) inside her bedroom,she began to cry. 一走进卧室,她就开始哭。
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3. 在where,wherever引导的地点状语从句中,可以省略主语和系动词或助动词。
Through long power lines,electricity goes where (it is) needed.电通过输电线输送到需要它的地方去。
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4. 在than,as引导的比较状语从句中。
Ｓhe works better than Ｉ (works). 她工作做得比我好。
I"d rather play football than (I"d rather) go swimming. 与其去游泳我还不如去踢足球。
Run as fast as you can (run). 你能跑多快就跑多快。
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5. 在“the+比较级,the+比较级”的句型中。
The greater the force of action (is),the greater the force of reaction (is).作用力越大,反作用力也越大。
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6. 在whatever,however引导的让步状语从句中,可以省略系动词。
He was determined to carry out the plan,whatever the cost (was).他决心执行计划,不管代价如何。
However difficult the task (may be),we must finish it on time.不管这任务有多难,我们都必须按时完成。
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7. 在“no matter+疑问词”引导的让步状语从句中,可以省略系动词be和重复的主语。
Anyone,no matter who (he is),may point out my shortcoming.不管是什么人,谁向我指出缺点都行。
Anyone who commits a crime must be punished no matter what his position (is).任何犯罪的人都必须受到惩罚,不管他地位多高。
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8. 在though,as though,as if引导的让步状语从句中。
Though (he is) tall, he is very weak in health. 他虽然长得高,但身体却很弱。
He went quickly out of the room as if (he was) in a hurry.他很快走出房间,好像很匆忙似的。
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