2. map computer trees pictures

3. blackboarddesk and chair playground

4. before now

6. lots of 许多 a lot of Look.There are ________chairs. lots of a lot of

9. There be 句型表示 “ 某处有某物 ”

10. there is --- there isn’t --- there are --- there aren’t --- there was there wasn’t there were there weren’t now before

12. 综合练习：用 “is are was were 、 wasn’t weren’t aren’t” 填空。 1.There ____ a slide before. 2. There ____ any desks in the room now. 3.There ____ any trees here before. abeforewas now desksany before treesany aren’t weren’t

13. 综合练习：用 “is 、 are 、 was 、 were 、 wasn’t 、 weren’t” 填空。 3.There ____ lots of little trees before. 4.There ____ a pond here before. 5.There ____ three swings before. were was were

14. 综合练习：用 “is 、 are 、 was 、 were 、 wasn’t 、 weren’t” 填空。 7.There _____ a big playground now. 8.There ____ a small playground before. is was

16. before

17. now

18. before now