题目

非谓语动词练习 （ ）
1 The old man,______abroad for twenty years,is on the way back to his motherland.
A to work B to have worked C working D having worked
2 Having been ill in bed for nearly a month,he had a hard time____exam.
A padd B to pass C passed D passing
3 Generallly speaking,_____according to the directions,the drug has no side effect.
A when taking B when taken C when to take D when to be taken
能否给一些指点

提问时间：2020-10-20

答案

1.D
having worked相当于who has worked
2.D
have a …time doing sth.这是固定搭配
3.B
这句话主语是drug,药是被吃的,当然用被动态了.
句意：一般来说,如果按说明书服用这种药,是不会有副作用的.