She has finished her homework

来源：学生作业帮编辑：灵鹊做题网作业帮分类：英语作业时间：2024/04/29 03:09:12

She has finished her homework
为什么要加has而不直接she finished her homework
原句:she has finished her homework and now she is watching TV.

从两个原因考虑:1.如果前半句是一般过去时,应该有一个过去时的时间状语,而这句话里却没有,所以从既要表示过去完成含义,有要满足句子基本要求的角度,用现在完成时可以不需要时间状语.2.第二个原因就是一整句话中最好保持基本时态一致.所以用现在完成时,与后面的现在进行时保持时态一致.

She has finished her homework She has dread finished her homework.(改为一般疑问句）将间接引语改为直接引语 1.Mary says that she has finished her homework. （1）I don't think she has finished her homework.(变为反意疑问句) she has finished her homework,根据主谓一致,主语单数,谓语用动词单数,have变为has, Kitty has already finished her homework.(一般疑问句） She had already finished her homework.改为否定句She＿＿her homework the girl has finished her homework.the boy has finished his She finished the homework （）the help （）her mother Susan went back home after she finished her homework yesterd 同义词：Lise went to bed after she finished her homework. she finished her homework quickly(对划线部分提问）