12岁英语怎么说:十二岁用英语怎么说

1. you had better set an alarm clock in case you sleep in.

2 he dare not leave the house for fear that he is recognized

3 if he wasn’t seriously ill, he wouldn’t stay in bed for a week/.

4 it is a pity that you stay at home on such a find day.

5 if human beings had two wings, the taxi drivers would lost their jobs.

6 if you hadn’t seen that film last night, you can’t be so sleepy now.

7 if we hadn’t used outdated timetable, we wouldn’t have missed the plane.

8 we suggest the meeting should be ended at once, because it is very late.

9 the smile on father’s face implied that he had agreedto our plan.

10 if you had listened to the teacher’s explanation carefully in class, you won’t have difficulty in translating this poem now.

11 george couldn’t havewritten to jenny, or she could hear from him now.

12 we all looked as if we dared not speak out what we thought, for fear that we may get into trouble

……

两者都是通用的
你可以说 the twelve-year-old boy is sleeping什么什么的，也可以说 the sleeping boy is twelve years old。一般来讲，加连词符可以不用加s，不用连词符则需要加上s