Theo sau tất cả trợ từ (động từ khiếm khuyết): can, could,will,shall, would, may, might, ought to, must, had better, would like to,needn’t, would rather, would sooner, be supposed to là những động từ không “chia”, V-bare
afford, appear, ask, bear, begin, choose, decide, expect, forget, hate,hesitate, intend, like, manage, neglect, prefer, pretend, propose, regret,seem, swear, try, wish, agree, arrange, attempt, beg, care, consent, determine,fail, happend, help, hope, learn, love, mean, offer, prepare, promise, refuse,remember, start, trouble, want, would like prefer.
2.b- [công thức: S+V+O+to V]:
advise, ask, be, command, encourage, forbid, get, help, intend, leave, mean,oblige, permit, prefer, recommend, remind, tell, allow, bear, cause, compel,expect, force, hate, instruct, invite, like, need, order, persuade, press,request, teach, tempt, trouble, warn, want, wish.
admit, advise,allow, anticipate, appreciate, avoid, confess, consider, deny, delay, detest,dislike, enjoy, escape, excuse, face, fancy, finish, give up, imagine,invlolve, justify, keep on, leave off, mention, mind, miss, permit, postpone,quit, recommend, resent, resist, resume, risk, save, tolerate, suggest,recollect, stop, pardon, can’t resist, can’t stand, can’t help, understand ngoai ra theo sau: be worth, it is no use, there is no, itis no good cũng là V-ing
advise, attempt, commence, begin, allow, cease, continue,dread, forget, hate, intend, leave, like, love, mean, permit, prefer, propose,regret, remember, start, study, try, can’t bear, recommend, need, want,require. Đa số những động từ trên khi theo sau là “to verb” hoặc”V-ing” sẽ có nghĩa khác nhau.