he has had trouble with cars and their owners
里面的has had
是不是因为这里的人称是第三人称才加了has?
人气:449 ℃ 时间:2019-10-25 18:07:28
解答
has是助动词,没有实意,这里只用作引导一个现在完成时
had是实意动词,有的过去分词.
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