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pay , cost , spend , take的区

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pay , cost , spend , take的区别? can , may , must的否定式?
pay , cost , spend , take的区
解题思路: pay , cost , spend , take的区别
解题过程:
1.人+ pay + 钱 + for + 物
人+ spend + 钱/时间 + (in)doing sth
人+ spend + 钱/时间 + on sth
It takes/took/will take + sb + 时间 + to do sth

I paid ten yuan for this book.
I spent ten yuan on this book.
I spent ten yuan (in) buying this book.
I spend a lot of money on books every year.
I spent three days staying in the city.
It takes me two hours to go to work by bus every day. 2.can , may , must的否定式: can的否定式:can't,may的否定式:may not must的否定式:否定式must not (mustn't)表示“不应该”、“不许可”、“不准”、“禁止”等。在回答带有“must"的问句时,否定式常用need not (needn't)或don't have to,表示“不必”、而不用must not,因为must not 表示“不可以”。表示推测(“一定”,“必定”),只用在肯定句中。 Must I be home before eight o'clock? Yes, you must.
No, you needn't./No, you don't have to.
最终答案:略