精选优质文档-倾情为你奉上句型转换1、 肯定句变否定句:1、 在be动词后加not。如:is not , are not , am not, was not, were not;2、 在情态动词can,should, will等后加not。如:cannot, should not, will not;3、 既有be动词又有情态动词,在情态动词后加not。如:There wont be a meeting.4、 上述都没有的,在动词前加助动词否定形式dont/doesnt/didnt。 特殊情况: 1. 如果肯定句中有连词 and ,变为否定句时,通常要将 and 变为 or 。例如: The girl can sing and dance. The girl cannot sing or dance. 2. 如果肯定句中 some ,变为否定句时, some 一般要改为 any 。例如: There are some boys in the room. There are not any boy