新概念2册L82笔记（不定式的完成时）
2023-04-12
L82 Monster or fish
单词理解
语法理解
不定式做主语时，避免头重脚轻，通过形式主语+不定式非谓语部分
谓语动词：do / does / did
非谓语动词：doing / done / to do
助动词+非谓语动词：谓语动词
- I am having breakfast.
- I have just received a letter from my brother.
- It is called a clavichord.
动名词：主语 / 宾语
- Fishing is my favorite sport. #做主语
- You must give up fishing. #做宾语
不定式：主语(常常后置主语)：It must be terrible to be grown up.
动名词和不定式都能做宾语，区别在于部分谓语动词有固定搭配，如claim to do
不定式被动态：
to do 去做 ，转化成被动态后to have done 做过
课文理解
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