不定式 介词to do sth,to doing sth.当一句话中to后面要接动词原定还是动名词的时候,我要先区分to

agree to do sth还是doing,动名词还是不定式? 我知道want sb to do sth中,动词不定式是做宾补,我想问一下,我要把TO后面的理解为动词不定式表目的对吗, want sb to后面接do sth还是doing sth be accustomed to后面加do sth.还是doing sth? why not后面是doing sth还是 to do sth enjoy后面加to do sth 还是doing sth 英语语法.单词有的动词有后面加to do sth的用法,请问,这个to do是不定式吗,还是说一种介词搭配. be crazy about 后面接doing sth,还是to do sth还是另外的 get sb down 后面接 to do sth 还是doing sth?还是其他的? stop……,后跟doing sth还是to do sth,to doing sth 或动词原形 prefer doing to doing sth这个词组,to是介词所以后面接动名词,那么prefer后面为什么加动名 expect to do sth还是doing sth?