问题描述:
I taught here last year变为现在进行时
变为现在完成进行时
I taught here last year
He began to make model planes when he was seven
they moved here in 1993(live)
Bill began to talk on the phone five minutes ago
My sister is playing with her dolls (three hous)
变为现在完成进行时
I taught here last year
He began to make model planes when he was seven
they moved here in 1993(live)
Bill began to talk on the phone five minutes ago
My sister is playing with her dolls (three hous)
问题解答:
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