She is always boasting about how wonderful her children are.这句话中 how wonderful her children are应该是感叹句,同时也是宾语从句,既然是宾语从句,那么怎么还会用介词引导呢?

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She is always boasting about how wonderful her children are.
这句话中 how wonderful her children are应该是感叹句,同时也是宾语从句,既然是宾语从句,那么怎么还会用介词引导呢?

谓语是个短语动词 boast about:夸耀,吹嘘
boast about 后可接名词,代词,也可以接宾语从句
1.Paul likes to boast about his achievements.
(保罗喜欢吹嘘他的成就.)
2.I will boast about a man like that,but I will not boast about myself,except about my weaknesses.
为这人,我要夸口.但是为我自己,除了我的软弱以外,我并不夸口.
3.American girls like boys who boast about how cool they are.
美国女孩喜欢男孩谈论他们自己是多么多么的酷.

英语中的宾语有两种情况,一种是及物动词后的宾语,一种是介词后的宾语。

boast是不及物动词,不能直接接宾语,同样也不能直接接宾语从句,加上about,构成一个及物的词组,可跟并于从句了,并不是说是介词引导的

wonderful
需要how修饰.