8.I never seem to lose any weight, hard I try.
A. even though B. no matter how C. as if D. ever since
7.The camera is expensive I can’t afford it.
A. so, that B. such, that C. so, as to D. enough, that
6.---I hope you’ll enjoy your trip, dear!
---Thank you, mum. I’ll give you a call _________ I get there.
A. until B. as soon as C. since D. till
5.None of us knew what had happened _________ they told us about it.
A. when B. until C. after D. though
4.---Shall we go on working?
---Yes, _________ I prefer to have a rest.
A. when B. if C. because D. though
3.You will stay healthy _______ you do more exercise, such as running and walking.
A. if B. how C. before D. where
2.Some passengers were walking through one of the big halls at Paris' Charles De Gaulle Airport __ the whole roof(屋顶)fell down.
A. while B. as soon as C. when D. after
1.I was drawing a horse ____the teacher came in.
A. while B. as C. when D. the moment
2. 若主从句谓语动词都是陈述过去,那么主从句都可以用一般过去时。例如:
She could sing when she was four years old. 她四岁的时候就会唱歌。
[语法过关]
1. 若主句是祈使句,或主句中有情态动词,或主句中谓语动词是一般将来时,那么从句用一般现在时表示一般将来时。例如:
Be careful when you cross the road. 过马路时要小心。
Put up your hand if you have any questions to ask. 如果你们有问题要问的话,请举手。
The traffic must stop when the lights are red. 红灯亮时,车辆必须停下。