一般过去式的结构:
(1)过去式be动词类:
a:陈述句:主语+谓语动词(was/were)+表语。
thev
were
in
the
classroom
a
moment
ago.(他们刚才在教室里。)
b:一般疑问句:将be的过去式was/were提到主语前,句尾加问号。
were
they
in
the
classroom
a
moment
ago?
(回答用yes,__________或no________,)
特殊问句:特殊疑问词+一般疑问句+?(回答用句子。)
c:否定句:在be的过去式was/were后加not,可缩写成wasn’t/weren’t即可。
they
weren’t
in
the
classroom
a
moment
ago.
(2)过去式行为动词类:
a:陈述句:主语+谓语动词(规则动词v-ed或不规则动词)+宾语+状语。
they
sang
songs
in
the
classroom
a
moment
ago.(他们刚才在教室里唱歌。)b:一般问句:在陈述句前加did,将句中谓语动词的过去式变成原形,句尾加问号。did
they
sing
in
the
classroom
a
moment
ago?(回答用yes,______,或,no,_______,)特殊问句:特殊疑问词+一般疑问句+?(回答用句子。)c:否定句:在陈述句主语和谓语动词之闻加助词did
not,可缩写成didn’t。they
didn’t
sing
in
the
classroom
a
moment
ago.
规则动词变过去式方法:
(1)一般动词加-ed,例如:work——orked
(2)以辅音字母加y结尾的动词变y为i再加ed,例如:stud——studied
(3)以一个字母加一个辅音字母结尾的重读闭音节,要双写辅音字母,再加-ed,例如:stop——stopped
(五)不规则动词需要专门记忆。