一般过去时的否定句:中+国+便+民+网
a.主语 + didn’t + 动词原形 + 宾语。 (did + not = didn't)
如:He didn't do morning exercises yesterday.原文www.cnbianmin.com
他昨天没有做早操。
b.主语 + wasn’t/weren’t +表语。c_n_b_i_a_n_m_i_n_c_o_m
(was + not = wasn't , were + not = weren't)
如:He wasn't an English teacher ten years ago.c+n+b+i+a+n+m+i+n+c+o+m
他十年前还不是一名英语老师。中_国_便_民_网
