《一般过去时的规则和不规则变化》由会员分享,可在线阅读,更多相关《一般过去时的规则和不规则变化(11页珍藏版)》请在金锄头文库上搜索。
1、一般过去时的规则和不规一般过去时的规则和不规则变化则变化规则动词规则动词l1.一般的动词:直接加一般的动词:直接加-ed如:watchwatched helphelped workworked l2.以字母以字母e结尾的单词:加结尾的单词:加-d如:loveloved livelived arrivearrived l3.以辅音字母以辅音字母y结尾的动词:变结尾的动词:变y为为i再加再加-ed 如:study studiedcry criedworry worriedcarry carriedl4.重读闭音节结尾的动词末尾只有一个重读闭音节结尾的动词末尾只有一个辅音字母,需双写这个辅音再加辅音
2、字母,需双写这个辅音再加-ed. stop _ stopped shop _ stopped 规则动词过去式记忆口诀规则动词过去式记忆口诀l过去式构成有规律过去式构成有规律l一般词尾加一般词尾加-edl如词尾有个如词尾有个e,直接加,直接加-d就可就可l辅音字母辅音字母y结尾,变结尾,变y为为i加加-edl辅音重闭结尾,双写之后加辅音重闭结尾,双写之后加-ed不规则动词的过去式不规则动词的过去式l(1)动词原形和过去式一样)动词原形和过去式一样letlet putputreadread cutcutcostcost hurthurtl(2)遇见)遇见i改为改为a swimsingbeginsitgivedrink swamsangbegansatgavedrankl(3)过去式以)过去式以ought和和aught结尾的单词结尾的单词bringbuythinkcatchteachbroughtboughtthoughtcaughttaughtl(4)中间去)中间去e末尾加末尾加tfeel keepsleepfeltkeptsleptl(5)把)把i变成变成o riderodel(6)ow/aw变成变成ew knowknew growgrewl(7)以)以d结尾的单词,把结尾的单词,把d改为改为t buildbuilt sendsent spendspent 结束结束