关于英语完成时的题目.
1.改错：Wehaveopenedthedoorfor3hours.
可不可以改成:
[Thedoorhasbeenopenedbyus for3hours.]?
2.Manypeoplehavestartedtojoinourgroupsinceitbegan.
(改为一般过去时态)
麻烦解释一下,我英语不是很好.
The door has been opened by us for 3 hours
The door has been open for three hours
这两个句子有什么区别吗?
人气：227 ℃ 时间：2020-05-26 02:43:23
解答
1 可以啊,你这样是正确的
2 只是改为一般过去时,主句和从句都要变一下,many people started to join our group when it begins
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