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shE hAs DonE和shE hAD DonE的区别

一、 “must+have+done”表示对过去事情的肯定推测,译成“一定做过某事”,该结构只用于肯定句. 1. It must have rained last night, for the ground is wet. 昨晚一定下雨了,因为地面还是湿的. 2. You must have been mad to speak to the servant. ...

特殊疑问句: What has she done?/When did you have the English class? 一般疑问句: Has she done her homework?/Had you an English class last night? 否定:she hasn't done her homework./I didn't have any English class last night. ...

once在这里是连词,引导时间状语从句。 所以本句是主从复合句

C 试题分析:句意:你能告诉我去最近的医院的路是哪一条吗?在宾语从句中必须使用陈述句语序,不能用疑问句语序,所以选C。

你好! 请你注意区分although和though although相对于though语气强硬 而且多用于书面语 though更口语化 通常情况下俩这可以互换 下面是对你提问的回答: 那么你提的问题里but和though是否重复呢? 在这个例句中though是副词 当though用作副词时...

She had never done such a thing before. 中文意思: 她以前从未干过这种事。

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