do/todo/doing归纳后面跟动词原形的有:You'dbetter(not)do;makesb.do;letsb.do;havesb.do;helpsb(to)do;Whynot...?Whydon'tyou...?Shallwe...?wouldratherdothando...;hear/watch/see/noticesb.doWouldyouplease...?后面跟动名词的有:finish/keep/practise/mind/enjoy/spend/suggest+doingcan'tstopdoing;Therebe+sb.doinghavedifficultydoing;bebusydoing;beworthdoing;hear/watch/see/noticesb.doingpreferdoingtodoing;lookforwardtodoing;beusedtodoing(习惯于);payattentiontodoing;devote...todoinghaveagoodtimedoing;whataboutdoing;stop/keep/preventsb.(from)doing后面跟不定式的有:ask/tell/encourage/allow/wouldlike/need/want/expect/warn/invite/order/remind/advisesb.todo特别提醒:不能说hopesbtodoagree/learn/hope/prefer/plan/decide/choose/wouldlike/seem/invite/fail/promise/affordtodobemadetodo;what/how/whentodoIt'stimetodo;tryone'sbesttodo;can'twaittodo;Thereisnoneedtodo;thefirsttodo;havenochoicebuttodo;It's+adj+(for/ofsb)+todobeheard/watched/seen/noticedsb.todo
