小学四年级英语语法知识点大全
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Be动词的变化:
⑴ am 和is在一般过去时中变为was。(was not=wasn’t)
⑵ are在一般过去时中变为were。(were not=weren’t)
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。
没有be动词的一般过去时
肯定句: 主语+动词过去式? 如: Jim went home
否定句: 主语+didn’t +动词原形? 如:Jim didn’t go home 一般疑问句: Did+主语+动词原形? 如:Did Jim go home yesterday?
特殊疑问句:⑴疑问词+did+主语+动词原形? 如: What did Jim do yesterday?
⑵疑问词当主语时:疑问词+动词过去式?如:Who went to home yesterday?
动词过去式变化规则:
一般在动词末尾加-ed,如:clean-cleaned, cook-cooked
以不发音的e结尾的在词尾加d,如:like-liked live-lived
末尾有一个元音字母和一个辅音字母的重读闭音节,双写末尾的辅音字母,加-ed,如:stop-stopped
以“辅音字母+y”结尾的,变y为i, 再加-ed,如:study-studied 但play-played
不规则动词过去式:
am, is-was, are-were, do-did, see-saw, get-got, go-went, come-came, have-had, eat-ate, take-took, sing-sang, put-put, make-made, read-read, write-wrote, draw-drew, fly-flew, swim-swam