关于英语完成时的题目.
问题描述：
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?
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