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how long后面要加什么动词?问题补充:how long 后面的动词一定是延续型动词吗?比如要用 How long has he been away from China?而不是How long has he left China?
人气:347 ℃ 时间:2020-06-18 02:09:04
解答
完成时 HAVE HAS HAD 或助动词 DO DOES DID 查看原帖>>
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