try doing sth.的否定形式是什么

try doing sth.的否定形式是什么 like doing sth 否定形式? be used to doing sth 的否定形式及举例 try to do 和try to doing sth的用法? 如：try to do sth.变成否定形式为try not to do sth.在英语的其他跟to do的单词适用吗, enough to do sth的否定形式是什么? dare to do sth的否定形式是什么 need to do sth的否定形式是什么? sb used to do sth.它的否定形式是什么? 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 try to do sth．和try doing sth．的区别? 写出go doing sth.形式的短语