need to do sth 的两种否定形式有什么区别?怎样区分和应用?

need to do sth 的两种否定形式有什么区别?怎样区分和应用? need to do sth和need doing sth 的区别 need to do sth的否定形式是什么? need 的用法need to do sth 和 need doing sth 的区别..有没有need to doin need to do sth和need do sth区别? used to do sth的疑问形式和否定形式 need的否定形式可以是need need to do sth为啥在否定形式时不可以呢?need doing sth在否 need sb do sth还是need sb to do sth?有什么区别 need to do sth,need do sth.needn`t do sth和don`t need有什么不同! 英语几个短语的区别need to do sth 和need doing sth 的区别 need to do sth.与 need doing sth.有什么区别? need to do sth和need doing sth的用法、意思和区别是什么?