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could/couldn’t后接动词原形
F
F
F
T
3.I couldn’t drive twenty years ago.
1.Seventeen years ago, I could teach.
4.Three days ago, I was very fat.
2.A week ago, I couldn’t speak English.
___________________________________________________
ago表示时间的短语,既可以放在句首,
与后面的句子用逗号隔开;
也可放在句末。
couldn’t= could not
could/couldn’t后接动词原形
F
F
F
T
3.I couldn’t drive twenty years ago.
1.Seventeen years ago, I could teach.
4.Three days ago, I was very fat.
2.A week ago, I couldn’t speak English.
___________________________________________________
ago表示时间的短语,既可以放在句首,
与后面的句子用逗号隔开;
也可放在句末。
couldn’t= could not
could/couldn’t后接动词原形
I couldn’t drive twenty years ago.