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 否定句:didn’t +动词原形，如: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: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: 1.一般在动词末尾加-ed，如:pull-pulled, cook-cooked 2.结尾是e加d，如:taste-tasted 3.末尾只有一个元音字母和一个辅音字母的重读闭音节，应双写末尾的辅音字母，再加-ed，如:stop-stopped 4.以“辅音字母+y”结尾的，变y为i， 再加-ed，如:study-studied 5.不规则动词过去式: am,is-was, are-were, do-did, see-saw, say-said, give-gave, get-got, go-went, come-came, have-had, eat-ate, take-took, run-ran, sing-sang, put-put, make-made, read-read, write-wrote, draw-drew, drink-drank, fly-flew, ride-rode, speak-spoke, sweep-swept, swim-swam, sit-sat