Must I go home now?和Can't you tell me the truth?肯定回答和否定回答。

第一句：肯定回答是：yes， you must，不是you need （凭语感）。 否定回答是：no ，you needn't。
第二句：肯定回答是：yes ，i can ，否定回答是：no ，
you can't

Must I go home now?
肯定：Yes, you must.
否定：No,you needn't.

Can't you tell me the truth?
肯定：Yes,I can.
否定：No,I can't.

Yes, you must.
No, you needn't.

Yes, I will.
No, I can't.

1 Yes, you must.
No,you needn't.

2 Yes,I can.
No,I can't.

备注：must的否定回答不能用mustn't,因为mustn't是“禁止”的意思。

Yes,you can./No,you needn't.
情态动词must的否定形式不能用must't。
yes,I can./No,I can't
这种回答肯否的句子要前后一致

1. 肯定： Yes ,you must.
否定： No ,you needn't./No,you don't have to.

2. 肯定：Yes,I can(翻译成：不，我可以告诉你)
否定：No,I can't.(是的，我不能告诉你)