以下英语句子怎样对括号部分提问?10.I'm （writing a poem） for national day.11.the children go to school (by bus).14.i have (three sheep) on the farm.21.these are (Tom's) books.26.there (some CDs) on the table.27.we played tennis (last saturday).你为什么这样变?遇到同句型首先要怎样变呢?

10.I'm （writing a poem） for national day.
What are you doing for National Day?
11.the children go to school (by bus).
How do the children go to school ?
14.i have (three sheep) on the farm.
What do you have on the farm?
21.these are (Tom's) books.
Whose books are these？
26.there (some CDs) on the table.
What is on the table?
27.we played tennis (last saturday).
When did you play tennis?
祝你进步！

10. are you writing a poem for national day?
11. Are the children going to school by bus?
14. Do you have three sheeps on the farm?
21. Are these Tom's books.
26. Are there some CDs on the table?
27. Did you play tennis last Saturday?

10,What were you doing for nationdal day?
要针对“做某事”进行提问,一般使用一般疑问句
11,How does the children go to school?
问方式.用how
14,How much sheep do you have on the farm?
问数量.可数用how many,不可数用how much
21.Whose books are these?
问所属,用whose
26.Is there anything on the table?
你的这一句应该是 there are some CDs on the table.为there be 句型,变为疑问句时改为be there 即可
27,When did you play tennis?
问时间用when,然后根据相应时态选择即可