4、主语+did’t.wasn’t=wasnotweren’t=werenot【didnot=didn’t】【do,does---did】am/is---wasare---were二、一般过去时的结构(可分三类不同的结构)注意:1.did和didn’t是构成一般过去时的助动词,其特点是要在其后跟动词的原形。2.实意动词do的一般过去时I do my homework everyday.(用yesterday改写句子)I ____my homework yesterday.I _________ my homework yesterday.(否定句)____ yo
5、u ____ your homework yesterday?Yes,Idid. /No, Ididn’t.(一般疑问句)They______(have)agoodtimeyesterday.They___________(notwatch)TVlastnight.____you_____(go)totheparkyesterday?Yes,I____./_____,Ididn’t.haddidn’twatchDidgodidNodiddidn’tdoDiddo3.情态动词的一般过去时态肯定句式:主语+情态动词的过去式+v原型+其它.否定句式:主语+情态动