在将陈述句变否定句疑问句(含反义疑问句)时,找准关键词,选对助动词很重要——句型转换不用慌,动笔之前先思量;先找“是”后找“有”再找“将”句中没有“是有将”;我们请“do”来帮忙除了以上几点外情态动词莫要忘。
注:“是”指的是be动词,它包括了am , is , are , was , were,这五种形式,两种时态学生比较容易掌握。a :
you are a student, aren’t you ?you aren’t a student .are you a student ?
she was late yesterday, wasn’t she ?was she late yesterday ?
b : 有” h**e , has , had,用于现在完成时和过去完成时,例如:i h**e been to beijing h**en’t been to beijing has never been to beijing before.
he had finished his homework before his mother came back.
找准了助动词h**e, has , had问题也就迎刃而解了。要交代学生“有”指的是助动词而不是实义动词。c :
将”字指的是will, shall ,would, should,找准了这几个词变疑问句,否定句也就不难了。there will be a meeting this afternoon, won’t there ?there will not be a meeting this there be a meeting this afternoon ?
d句中有情态动词时,变化方法和以上诸项一样。(must, can ,may ,need etc)we must finish our home work on time ,否定句must后加not ,疑问句must提前。
第五点也是最至关重要的一点,当句中即没有“是”“有”“将”也没有情态动词时,要看原句时态,初一阶段只出现了现在时,那就选do ,单三人称does,初二年级出现过去时,那就选did,现举例如下:1、i like english very you like english very much ?i don’t like like english very much .
2、she goes to school on she go to school on foot ?she doesn’t go to school on foot.
3、he studied inno. i middle school last term., did he study in no i middle school last term ?
he didn’t studyin ……
当学生把顺口溜说得上口之后,通过实例讲解。学生们一下子就豁然开朗了,一定会收到事半功倍的效果。这中间起始阶段要特别强调助动词do,does的使用:
八年级过去时中did的使用,will , shall, should, would比较直观不是难点,九年级重视h**e, has, had的使用。
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