第1个回答 2013-07-07
1.my dad was a teather 3 years ago.
my dad was not a teather 3 years ago.
-was your dad a teacher 3 years ago?
-yes, he was./no, he wasn't.
2.i was busy yesterday.
i was not besy yesterday.
-were you busy yesterday?
-yes, i was./ no, i wasn't.
3.my friend was at school yesterday.
my friend was not at school yesterday.
-was your friend at school yesterday?
-yes, he was./ no, he wasn't.
4.tom was a policeman 10 years ago.
tom was not a policeman 10 years ago.
-was tom a policeman 10 years ago?
-yes, he was./ no, he wasn't