I used to be outgoing.改为否定句可以改为I used not to be outgoing吗?她害

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I used to be outgoing.改为否定句可以改为I used not to be outgoing吗?她害怕当众说话可以是
She's afraid of speaking in front of a group.

可以 didn't use to 和use not to 现在不区别了
in front of a group这个怎么说嗯太直白了有点中式的感觉最好用in the public situation
再问：为什么be afraid of不用be afraid to
再答：我觉得to do 也可以不过你要是真较真的的话这题应该用to do 这两个还是有一定区别的 be afraid of doing指担心不利于自己的事发生，侧重于一种结果 be afraid to do 单纯的指胆小，害怕,不敢去做某事举个例子：He was afraid to walk along the banks ,as he was afraid of falling down the river. 不过很少有人分得这么仔细，就好比like to do ,like doing 很少有人区别一样

I used to be outgoing.改为否定句可以改为I used not to be outgoing吗?她害 Lucy used to be outgoing,but now she is very quiet.（改为同一句） Jim used to be (outgoing and energeric).(提问) Ann used to (be outgoing and energeric).(提问) Tom used to be really quiet[改为否定句 She used to be a history teacher改为否定句 she used to be a history teacher 改为否定句 I used to be He used to be quiet.(改为否定句） He _____ _____ to be quiet. You used to be very kind to me改为否定句 I used to be happy My brother used to be noisy and outgoing.what did your broth