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四、难点讲解
1.You'd better go to bed earlier tonight. 今晚你最好早点睡。
had better加动词原形表示：最好做某事，用来向别人提出建议。可缩写为：'d better.例如：
You'd better watch carefully before you cross the road. 过马路之前你最好要看仔细。
We'd better hurry up， or we'll be late. 我们最好快一点，要不然就晚了。
如果建议别人最好不做某事，使用“had better not加动词原形”这一句型。例如：
You'd better not read in bed. It's bad for your eyes. 你最好不要躺着看书，对你眼睛不好。
You'd better not play basketball after lunch. It's bad for your health. 你最好不要在午饭后就玩篮球，它对健康有害。
2.A woman saw it happen when she was walking past. 一位妇女走过的时候，看到了事情的经过。
上述句子包含以下句型： see sth. happen.
表示感觉的动词如：see， hear， watch等，以及其他动词如：make， let等，后面构成复合宾语时，动词不定式的to要省去。例如：
The children saw the motorbike hit the bag of rice. 孩子们看见摩托车撞在了米口袋上。
Whose photo is that？ Let me have a look at it. 那是谁的照片？让我看看。
Did you hear him play the piano just now？ 刚才你听见他弹钢琴了吗？
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