《Lesson 1 On Your Bike》精品PPT课件优质课下载

《Lesson 1 On Your Bike》精品PPT课件优质课下载

now

Yesterday , we

cleaned the

classroom.

Now, the classroom

is clean because

we have cleaned it.

用法1

强调过去发生的动作对现在产生的结果或影响

1. My father bought many books for me yesterday .

Now , I have a lot to read because ________________________________

2. I saw this film last week.

Now, I know this film because I_____________________.

3. I did my homework yesterday.

Now, I can give it to the teacher because I______________

my father has bought many books for me.

have seen it before

have done it.

“仍然，还 ” 用在疑问句和否定句中，放在句末。

I haven’t read this book yet .

Have you had breakfast yet ?

already:

Yet:

“已经”通常用于肯定句中,放在句中。

I have already read this book.