1) He is busy weeding.
他正忙于除草。
2) She is busy laying turf.
她正忙于铺草皮。
3) He is busy washing clothes.
他正忙于洗衣服。
4) He was busily engaged in writing letters.
他正忙于写信。
5) He was busy laying turf.
他正忙着铺草皮。
6) He was busy with his work.
他忙于工作。
补充资料：我们
1.代词。称包括自己在内的若干人。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条