一般过去时 1.一般过去时表示过去某个时间发生的动作或存在的状态,常和表示过去的时间状语连用。一般过去时也表示过去经常或反复发生的动作。 一般过去时由动词的过去时表示,除be动词以外,其余动词的过去式没有人称和数的变化。Be动词第一人称单数和第三人称单数用was,其余用were. 动词过去式的构成分为规则动词和不规则动词两种。规则动词的变化按规则进行,不规则动词的变化则要逐一记忆。 2.Be动词在一般过去时中的变化: 1 ⑴am 和is在一般过去时中变为was。(was not=wasn't)如:I was busy this morning. He was busy this morning. 2 ⑵are在一般过去时中变为were。(were not=weren't)如: You were 11 last year. We were in the classroom yesterday. They were tired last night. ⑶带有was或were的句子,其否定、疑问的变化和is, am, are一样,即否定句在was或were后加not,一般疑问句把was或were调到句首。 3.句中没有be动词的一般过去时的句子 1 行为动词的一般过去时使用 1) 在一般过去时中,句中常用表示过去的时间状语,如 yesterday, last night, in 1995, two days ago, last week等。例如:I went to Beijing two days ago. I did my homework last night. 2) 如果表示过去经常反复发生的动作,则句中常用表示频度的时间状语,如often, always等。 例如:He always went to work by bus last year. Mary often came to help us last week. 2 行为动词的句型转换 否定句:didn't +动词原形,如:Jim went home yesterday. Jim didn't go home yesterday. 一般疑问句:在句首加did,句子中的动词过去式变回原形。 如:Jim went home yesterday. Did Jim go home yesterday? 特殊疑问句:⑴疑问词+一般疑问句?如:Jim went home yesterday. Did Jim go home yesterday? What did Jim do yesterday? 4. 规则动词的过去式变化情况 1 一般情况,在动词的词尾直接加-ed, 如:help—helped ask—asked work—worked 2 以不发音的e结尾的动词,直接加d, 如: live—lived use—used like—liked move—moved 3 以一个辅音字母结尾的重读闭音节,双写末尾的辅音字母,再加-ed, 如:stop—stopped fit—fitted beg—begged 4 以辅音字母+y结尾的动词,改y为i再加ed, 如:study—studied carry—carried cry—cried 规则动词过去式的发音规律 清—清 浊—浊 元—浊 /t/ /d/ 之后发/id/ 1 清辅音(/t/ 除外)后,加ed, ed发/t/, 如:worked finished 2 浊辅音(/d/ 除外)后,加ed, ed发/d/,如:called loved 3 元音后加ed, ed发/d/, 如:played tried 4 在重读/t/ /d/ 后ed 发/id/ 如:planted waited needed 写出下列动词的过去式 is\am_____________ fly____________ plant____________ are ____________ drink_____________ play___________ go______________ make ________ does_____________ dance__________ worry___________ ask ___________ taste_____________ eat____________ draw____________ put ____________ throw____________ kick___________ pass____________ do __________ 预览已结束,请登录阅读全文。 本文共6页,您只能预览前4页,下载后可全文阅读 版权声明:本文档由用户提供并上传,收益归内容提供方,若内容存在侵权,请进行举报或认领 |