句型转换。

1. The train might be late today.(用perhaps或maybe 改写)

     _____the train_____be late today.

2. You must get to school before six tomorrow.(用have to改写)

    You_____           to school before six tomorrow.

3. lt's going to rain. Maybe we have to stay at home.(改为同义句)

    It's going to rain. We_____             stay at home.

4. I'd like to work in a hospital when I grow up.(改为同义句)

    I'm going to _____when I grow up.

5. I have to spend a few weeks on my model plane.(改为同义句)

    I have to spend a few weeks_____ _____my model plane.

中性线及保护线带电体距接地体间隙困难情况下不应小于100mm。