please be quiet.变否定句 please stand in line.变否定句 don t stamp your,please.变肯定句
please be quiet.变否定句 please stand in line.变否定句 don t stamp your,please.变肯定句
please don t walk on the grass.变肯定句
快
please don t walk on the grass.变肯定句
快
英语人气:251 ℃时间:2019-11-01 13:21:44
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1.若原句中有动词be原句中含有be动词(am,is,are,was,were) 和助动词(have,has,had) 和情态动词(can,shall,will,may,should,would,might,had better等)时,要在动词后直接加not.如:His mother has already called the...
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