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问：①如何表达这不是我的？②如何表达给你我的外套？③英文的缩写

答：①be动词后加not ②Here is my coat ③is not=isn't

A：My coat and my umbrella,please.

A：Here is my ticket.

B：Thank your ,sir.   

B：Nmber five. 

B：Here's your umbrella and your coat.

A：This is not my umbrella .

B：Sorry,sir.

B：Is this your umbrella？

A：No.it isn't.

B：Is this it？

A：Yes,it is.

B：Thank you very much.

Here is my... 给你我的     eg:Here is my coat.  Here is my phone.

语法：否定句→在be动词后加not。

eg：Tyler is here.泰勒在这里→Tyler isn't here.