14 we have four lessons.改为否定句 15 Nancy doesn't run fast .改为肯

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14 we have four lessons.改为否定句 15 Nancy doesn't run fast .改为肯定句
16.My dog runs fast .否定句和一般疑问句 17 Mike has two letters for him.一般疑问句

14.We don't have four lessons.
15.Nancy runs fast.\
16.否定句：My dog doesn't run fast.
一般疑问句Does your dog run fast?
17Does Mike have two letters for him?

14 we have four lessons.改为否定句 15 Nancy doesn't run fast .改为肯 Nancy doesn 't run fast .(肯定句 run fast 改为否定句 (改为同义句)We have four lessons in the morning. 英文求教Nancy doesn’t run fast 肯定句是 Nancy runs fast 这个 Nancy can Nancy does not run fast改为肯定句可以是Nancy does run fast We have four lessons否定句 we have three lessons in the afternoon.改为否定句 we have six lessons a day 改为否定句 He doesn't run so fast as you do.（改为肯定句） Li Ping doesn't run as fast as Wang Lin.（改为同义句） Li Ping doesn't run as fast as Wang Lin.改为同义句