如何简化从句
英语从句法上分有词类（实词 虚词）、句型结构（五大句型结构）、和句子类型（简单句、复合句），复合句有名词性从句（主语从句、表语从句、宾语从句、同位语从句），形容词从句（定语从句）副词性从句（状语从句）。如果如果学生能够正确理解句子并能简化，运用时就可以用不同的形式表达同样的意思。无论做选择题还是运用到写作上，都会有不同的效果，那么该如何简化呢？下面是小编收集到的关于如何简化从句的方法，一起来看看吧。
一、如何简化宾语从句
1.当谓语动词是 tell teach discuss wonder等词时，后面的宾语从句可转化为特殊问句词+不定式。
如：He showed us how we should do the work.
→He showed us how to do the work.
I do not know what I will do →I do not know what to do.
2.谓语动词是 decide hope wish choose等词时如果主句和从句主语相同,可转化为V+不定式短语
she hopes that she will be back soon.
→she hopes to be back soon.
二、如何简化定语从句
1.用过去分词
He is the only person who was invited to the Party.
→He is the only person invited to the Party.
2.用现在分词
I have a friend who lives in Londen.
→I have a friend living in Londen.
3.用不定式
He has a large family that he must support.
→He has a large family to support.
4.用介词短语
The reason why he was absent was that he was ill.
→The reason for his absence was that he was ill.
三、状语从句转化
1.由when since as than while if 引导的状语从句，如果主语与从句主语一致，从句主语可省
you must be careful when you are crossing the street .
→you must be careful crossing the street .
2.当从语的主语是it谓语动词是be或从语为there be句型，时，it和be或there be句型可省略
He will be here to give you help when it is necessary.
→He will be here to give you help when necessary
We can go here if it is necessany→We can go here if necessany
3.so—that引导的从句可转化为too_to not enough- to或in order to
she is so young that she can not go to school.
→she is too young to go to school.
→she is not old enough to go to school. He got up early so that he might catch the early bus.
→He got up so early as to catch the early bus.
→In order to catch the early bus, he get up early.
4.if引导的主从条件复合句可转化为祈使句+and+将来时
If you word hard,you will succeed
→Work hard and you will succeed
If you can give us one more week, we will finish it.
→One more week,and we will finish it.
5.once引导的时间状语从句简化为once+过去分词
The research is so designed that once it is begun,nothing can be done to change it.
→The research is so designed that once begun nothing can be done to change it.
6.as soon as the moment the minute the insrant immediately directly可转化：
1）on+n/ving 如：on his arrival/on hearing the news.
2）to/at+n at the sight of /to the sound of
四、其他
1.虚拟句的转化
If there had not been his help, I would not have made so much progress.
→Without his help , I would not have made so much progress.
还可用but for
2.并列句的转化
One of the sides of the board should be painted yellow, and the other should be painted white.
→One of the sides of the board should be painted yellow,and the other white.
3.主语从句
What we should do next still remains a problem.
→What to do next still remains a problem.
4.表语从句
My idea is that we should do more work with less money.
→My idea is for us to do more work with less money.
5.It is said/thought 可转化为sb is said/sb is thought
It is said that he is rich→ He is said to be rich.
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