英语语法-名词从句

英语语法-名词从句

概念:三种句子充当另外一句子的四种句子成分

1. 陈述句:句前 + that (当宾语时可省略)

​ a. That the moon itself does not give off lights is common knowledge.

​ b. I’ve learned (that) love, not time heals all wounds.

2. 一般疑问:变陈述句语序,句前 + whether(当宾语时可用if)

​ a. My question is whether people will live on the moon someday.

​ b. I don’t know if/whether he needs my help.

3. 特殊疑问:变陈述句语序

​ a. Money is what we are badly in need of.

句子类型 引导词 从句中作用
陈述句 that 不做成分
一般疑问 whether, if 不做成分
特殊疑问 连接副词when, where, why, how连接代词who, whom, what; which, whose 连接副词做状语who, whom, what做主语/表语/宾语which, whose做定语,后+名词连用

it形式主语:it在句首,主句在后面

​ a. It is common knowledge that the moon itself does not give off light.

​ b. It is not known where they came from.

it形式宾语:复合宾语中:动词 + it + 宾补 + 宾语从句

​ I find it encouraging how many young women are pursuing careers in

science.

双宾语:Could you tell me where the post office is?

介词后做宾语: You should vote for which candidate you assume best.

形容词后做宾语: I am afraid that I can’t come.

并列宾语从句中that不省略: I once read that “” and that “”.

reason后的表语从句:引导词用that,不用because.

​ The reason (why) he was dismissed is that he was careless and irresponsible.

嵌套:a. I realized that what I said was not exactly what I meant to say.

​ b. The question is how what you have learned can be put into practice.

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