3、你知道月食的形成过程吗？
答：①可以节约能源；②减少对环境的污染；③降低成本。
7、对于生活中的一些废弃物，我们可以从垃圾中**它们并重新加工利用。这样做不但能够减少垃圾的数量，而且能够节省大量的自然资源。
预计未来20年，全球人均供水量还将减少1/3。
16、在北部天空的小熊座上有著名的北极星，可以借助大熊座比较容易地找到北极星。黑夜可以用北极星辨认方向。
对划线部分提问/句型转换专项训练习题。
练习一： is a japanese car. (改为否定句) thisa japanese car.
s my cup. (改为一般疑问句that __cup?
is a nice jeep. (对划线部分提问it?
hua is in row three. (同上is wei hua in?
that a computer? (作否定回答) no
6. it's a pear. (改为否定句a pear.
7. you can sit down. (改为一般疑问句sit down?
8. i am in grade 2.(对划线部分提问you in?
9. is that a cake?(作否定回答。
10. is, what, three, one, and(连词成句。
11. i think it is a bird. (改为否定句) i __think it __a bird.
12. han mei isn't in today. (改为同义句) han mei isn'ttoday.
13. li lei is twelve. (对划线部分提问is li lei?
14. her name is li lan. (改为一般疑问句name li lan?
15. the cat is here. (对划线部分提问the cat?
s a pencil-box. (改为复数句are
17. that's ok. (改为同义句that's
18. these are chinese books. (改为否定句) thesechinese books.
19. they are children. (改为单数句) hea
20. those are hills. (对划线部分提问。
21-25 同义句)
21. that isn't a new coatthat iscoat.
22. lily is in row two. lucy is in row two, too.
lily and lucy are inrow.
23. tom and billy are twinstom is billy's
24. my bike is heremy bike __not __
25. every student is at school today. the studentsat school today.
26. jim green is english. (用american 构成选择疑问句)
27. they are boxes. (改为否定句。
28. my brother can spell his name. (改为一般疑问句)
29. we go to school at seven. (用emma作主语)
30. my phone number is 6835702. (对划线部分提问)
1. is not 2. is, your 3. what is 4. what row 5. it isn't
6. it isn't 7. can i 8. what grade are 9. no, it isn't 10. what's one and three
11. don't, is 12. at home 13. how old 14. is her 15. where is
16. they, pencil-boxes 17. all right 18. are not 19. is, child 20. what are those
21. an old 22. the same 23. twin brother 24. is, there 25. are all
26. is jim green english or american
27. they aren't boxes
28. can your brother spell his name
29. emma goes to school at seven
30. what's your phone number
练习二：四类专项练习。
一、将下列句子改为复数形式：
is a knife in the boxtherein the box.
's a woman doctorthey're
teacher often tells us a storyour __often __us __
sheep is over theretheover there.
pass me a piece of breadplease pass me some __of __
二、下列句子改为否定句：
does some reading every day. hereading every day.
h**e to wash the dishesiwash the dishes.
him the newshim the news.
has brothers and sistersshe has___brothers __sisters.
think she is rightisheright.
三、下列句子改为一般疑问句：
is some fruit juice in the glassfruit juice in the glass?
has to stay herehe __to stay there?
3. we do eye exercises every dayyou __eye exercises every day?
4. she has something to eatsheto eat?
am good at singing and dancingyou good at singing __dancing?
四、对划线部分提问：
mother goes to work by bikeyour mother __to work?
is a map of francemap is that?
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