3d专家杀号定胆方法:请帮助我把过去时,完成时的句型写出来,并举例!
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过去时:sb did sth
例:I did my homework yesterday evening.
完成时:sb have done sth
例:I have finished my homework.
过去时:sb did sth
例:I did my homework yesterday evening.
完成时:sb have done sth
例:I have finished my homework.