She is always boasting about how wonderful her children are.

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/09 12:45:15

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.
再问：但是我在牛津词典里同时也看到这么一句：Sam boasted that she could beat anyone at poker。【she could beat anyone at poker】不就是宾语从句么？这里难道that也可用about来代替？
再答：没错，这牵涉到另一个语言点，那就是【介词后一般不接that-从句】（but, except, in 除外）当介词和that从句狭路相逢时，一般去掉介词，于是便有了你看到的句子了。再如： He insisted on going there alone. =He insisted that he should go there alone. I am sure of his success. =I am sure that he will be successful. 明白？
再问：可是我还是不明白，既然这样，那么She is always boasting about how wonderful her children are.中为什么保留介词而不是去掉that？在boast前面的宾语从句，究竟什么时候是用介词，什么时候是用that？ O(∩_∩)O谢谢回答
再答：由 what, how, why, whether 等引导的从句哪来的连词that?! 总不可能是两个引导词吧？

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