They need to study hard at school.(做两句否定句，两句一般疑问句） 123456顺次连成一句话 改成否定句 一般疑问句

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Was it Saturday afternoon?
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Yes,it was.
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No, it wasn't.
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It wasn't Saturday afternoon.

Were Kitty and Ben at home?
Yes,they were.
No,they weren't.
Kitty and Ben weren't at home.

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1.Alan has not to study hard with his classmates in order to pass the English test at school tonight.

否定句：They do not need to study hard at school,或者They need not study hard at school
Do they need to study hard at school?或者Need they study hard at school?

They don't need to study hard at school.
They needn't study hard at school.

Do they need to study hard at school?

Need they study hard at school?

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