三单变化规则.doc

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1、动词三单变化规则与练习•变化规则：•1．一般情况下，直接加-s，如：play-plays,walk-walks•2．以s，x，ch，sh及部分o结尾，加-es，如：pass-passes,fix—fixes,wash-washes,watch-watches,go-goes，do-does•3．以“辅音字母+y”结尾，去y为i,再加-es，如：study-studies•   fly--flies练习：写出下列动词的三单数形式1.work_______2.watch_________3.clean________ 4.write_____

2、__5.teach_______6.wash__________7.have_______8.read________ 9.go__________ 10.do__________11.fly________ 12.study_______13.She----------(watch)TV.      I----------(watch)TV.答案：1.1.works2.watches3.cleans4.writes5.teaches6.washes7.have__has_____8.reads9.goes10.does11.fly___

3、flies_____12.study_studies______13.Shewatches(watch)TV.      I  watch(watch)TV.