《He is playing the suonabut the phone rings》PPT课件
《He is playing the suonabut the phone rings》PPT课件第2页

be

+动词ing

am

is

are

现在进行时态: (表示正在做…….)

I 用 am,is跟着he/she/it(人名单数)。

1、Lingling is reading a book. 2、Lingling and Amy are reading a book.