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在英语语法中,名词性从句是由一个引导词和一个从句组成,可以在句子中充当名词的作用。名词性从句的类型有以下几种。
主语从句
主语从句是指在句子中充当主语的从句,通常使用that, whether, who, what, where, why, how等词引导。例如:
- What he said is true.(他说的是真的。)
- Whether the weather will be good tomorrow is still unclear.(明天天气是否会好仍不确定。)
- That he is successful is beyond doubt.(他成功是毫无疑问的。)
宾语从句
宾语从句是指在句子中充当宾语的从句,通常使用that, whether, if, who, whom, whose, what, when, where, why, how等词引导。例如:
- I know that you are busy.(我知道你很忙。)
- She asked me whether I had finished my homework.(她问我是否完成了作业。)
- He wonders if she will come back.(他想知道她是否会回来。)
表语从句
表语从句是指在句子中充当表语的从句,通常使用that, whether等词引导。例如:
- The problem is that we don't have enough money.(问题在于我们没有足够的钱。)
- What she needs is a good rest.(她需要的是好好休息。)
同位语从句
同位语从句是指在句子中对某个名词或代词进行解释或说明的从句,通常使用that等词引导。例如:
- The news that he won the prize made me happy.(他获奖的消息让我很高兴。)
- The fact that she is leaving is undeniable.(她要离开的事实是不可否认的。)
定语从句
定语从句是指在句子中对某个词进行修饰或限定的从句,通常使用that, which, who, whom, whose等词引导。例如:
- The book that I borrowed from the library is very interesting.(我从图书馆借的那本书非常有趣。)
- The boy who is playing basketball is my brother.(正在打篮球的男孩是我的兄弟。)
以上就是名词性从句的几种类型及其常用引导词,希望能对大家的英语学习有所帮助。