第1个回答 2010-01-30
am ,is,are过去式was.were
have,has过去时had
do,does过去时did
主语第三人称单数
he,his.
she,her.
it,its.
主语非三单
I,my,me,mine
肯定回答:yes,i am(he is类推)yes,they are(类推)
否定回答:no,i am not(he is not类推)no,yhey do not(类推)
一般疑问句形式是助动词提前:如This is a car变为Is this a car?
特殊疑问句形式是what,when,where,why,who,how+ 一般疑问句式
如:Where are you going?