这个是我所学过的短语,肯定句decide to do sth ,否定句decide not do do sth

这个是我所学过的短语,肯定句decide to do sth ,否定句decide not do do sth decide not to do sth decide to do sth decide to do sth. 请问是decide to do sth 还是 decide doing sth? decide doing sth.与decide to do sth.的区别? 动词+not to do sth 如 decide not to do sth ,try not to do sth 英语短语怎么背比如决定做某事是decide to do sth ,有时会被成decide doing sth 或者dec 初中英语短语结构for example：decide to do sth. let sb.do sth.该否定句是let sb.not do sth.还是let sb.not to do sth 用decide not to do sth造句,要翻译, 用decide to do sth造句