be busy doing忙于做某事,動詞用成v.ing
They are busy doing their homework.
他們正忙于做作業。
be busy with sth.忙于做某事,但with後跟名詞或代詞
They are busy with their homework.
他們正忙于做作業。
中考語法點:be 形 doing
be worth doing 值得做某事.......
be busy doing
日日行,不怕千萬裡;常常做,不怕千萬事。歡迎點擊!!!
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