◆ 感叹句：What 与 How
· What + (a/an) + 形容词 + 名词 (+ 主语 + 谓语)!
What a beautiful city (it is)! What delicious food!
· How + 形容词/副词 (+ 主语 + 谓语)!
How beautiful the city is! How fast he runs!
· 记忆技巧：What 后面跟"名词"，How 后面跟"形容词/副词"。
What a clever boy he is! = How clever the boy is!
◆ 反意疑问句："前肯后否，前否后肯"
· He is a teacher, isn't he?（前面肯定，后面否定）
· She doesn't like coffee, does she?（前面否定，后面肯定）
· 注意人称和助动词要对应：
They went to Beijing, didn't they?
Tom can swim, can't he?
◆ 特殊情况
· I'm 的反意疑问句用 aren't I：I'm late, aren't I?
· Let's 开头用 shall we：Let's go, shall we?
· 祈使句后用 will you：Open the door, will you?