慢速英语:You Really Should Learn Modals!

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1. express vt.表达; 表示; 显而易见
例句：The writer wishes to express his appreciation for the aid received.
作者对于受到的帮助谨致谢忱。

2. substitute vt.代替，替换，代用
例句：Is saccharin a good substitute for sugar?
糖精是糖的良好替代品吗?

3. suggestion n.建议，意见，暗示; 联想
例句：He put forward a constructive suggestion.
他提出了一个建设性的建议。

4. participle n.<语>分词
例句：There be two types of participle in english: the past participle and the present participle.
英语中有两类分词:过去分词和现在分词。

5. disappear vi.不见，消失; 不复存在
例句：When I think of you the miles between us disappear.
千山万水,隔不断我对你的思念。