I am very glad to have received the letter中to后面为什么用完成时?to后是不是省略了that.否则一个...I am very glad to have received the letter中to后面为什么用完成时?to后是不是省略了that.否则一个句子不是有
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I am very glad to have received the letter中to后面为什么用完成时?to后是不是省略了that.否则一个...I am very glad to have received the letter中to后面为什么用完成时?to后是不是省略了that.否则一个句子不是有
I am very glad to have received the letter中to后面为什么用完成时?to后是不是省略了that.否则一个...
I am very glad to have received the letter中to后面为什么用完成时?to后是不是省略了that.否则一个句子不是有两个动词了吗?求详解
I am very glad to have received the letter中to后面为什么用完成时?to后是不是省略了that.否则一个...I am very glad to have received the letter中to后面为什么用完成时?to后是不是省略了that.否则一个句子不是有
I主语 am系动词 very glad表语 to have received the letter状语
to后面用了不定式的完成时,表明have的动作的时间在am状态所表示的时间之前；to是不定式符号,后面必须跟动词原形,但to do属于非谓语动词形式,而am是谓语动词形式,两者并不矛盾,是兼容的.
to have done 是to do 的完成时结构，表示先于谓语动词发生。
比如He pretened to have been there before. 他假装之前去过那里。
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同学，你可以这样理解,be glad to do sth 是一个固定搭配，而receive the latter 是已经发生过的事情对吧？to在这里是介词，后面的 have received the letter是用来解释glad的原因。有事不用深究他的语法，英语不能只靠语法来学，因为英语有时是么有语法的，就像long time no see,你懂得。...
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同学，你可以这样理解,be glad to do sth 是一个固定搭配，而receive the latter 是已经发生过的事情对吧？to在这里是介词，后面的 have received the letter是用来解释glad的原因。有事不用深究他的语法，英语不能只靠语法来学，因为英语有时是么有语法的，就像long time no see,你懂得。
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