http://s9/middle/4bfab144t95856b203298&690



例句：

1. He is a teacher. He was a teacher.  He will be a teacher.

2. She works here every day.She worked here every day last year. She will work here every day next year.

3. They go home once a week. They went home once a week last year. They will go home next week.

4. We are studying English now. We were studying English this time yesterday.

   We will be studying English this time tomorrow.

巩固练习：

1．          一年有四季。

2．          我们昨天看见了大海。

3．          他有两个儿子。

4．          天上有个太阳。

5．          我们每天喝茶、吃肉。

6．          她每天吃鱼、吃肉，不吃粥。

7．          我们教室里有16个座位。