英语句型转换之一——肯定句变否定句的技巧请同学们记住以下单词:1、be动词的五种形式:am,is,are,was,were;2、情态动词:can,could,may,might,must,shall,should,will,would,need,hadbetter3、助动词:have,has,had一、动词后直接加not原句中含有be动词(am,is,are,was,were)和情态动词(can,shall,will,may,should,would,might,hadbetter等)时,要在动词后直接加not
Iamateacher
→Iamnotateacher
LiLeicanswim
→LiLeicannot(can't)swim
Hewillgotothezooifitrainstomorrow
→Hewillnot(won't)gotothezooifitrainstomorrow
Wehavelearned3,000words
→Wehavenot(haven't)learned3,000words
二、原句中没有be动词,助动词或情态动词时,要在行为动词前加助动词(do,does,did)与否定副词not的缩写形式
句中第一个动词是原形时,在其前加上don’t
如:Igetupatsixo'clockeveryday
→Idon'tgetupatsixo'clockeveryday
句中第一个动词是三单形式时,在其前加上doesn’t,原来的动词三单形式改为动词原形
如:MrWangworksinafactory
→MrWangdoesn'tworkinafactory
句中第一个动词是过去式时,在其前加上didn’t,原来的动词过去式改为动词原形