情态动词后要接实义动词或者系动词的原形;情态动词的时态比较单一,大部分情态动词只有现在时和过去时两种时态, must 则只有现在时。
常见的情态动词包括:can, must, may, shall, will, dare, need, ought to 等。其基本用法主要考点包括:
- You needn't do that.
- You don't need to do that.
- He needs to work 10 hours every day to support the family.