Book7 unit1 Grammar—the infinitive Learning Goals:To learn the function of the infinitive.Ability Goals:To master the use of the infinitive1.The function of the infinitive不定式，本领强，六种成分都能当。（主语，宾语，表语，定语，状语，宾补）2. The use of the infinitive 作主语To finish the work in a week is impossible. 可用 it 作形式主语_________________________________________注意：与 doing 作主语的区别：表示经常性、习惯性的抽象动作，一般用动名词作主语；表示具体的，特别是将来的动作，一般是用不定式结构作主语。比较：Getting up early is a good habit.作宾语1)有些动词能直接不定式作宾语offer, learn, plan, ask, promise, agree, help, prepare, hope, decide, choose, refuse, manage,wish, want, expect, demand, determine, pretend…2)动词+疑问词+不定式decide, find out, forget, know, learn, remember, see, think,understand,wonder3)有些动词或动词短语后只能接动名词作宾语。admit, appreciate, avoid, can’t stand, consider, delay, dislike, enjoy, escape, excuse, feel like, finish, forgive, get down to, give up, imagine, insist on, keep(on),look forward to, mind, miss, pay attention to, practise, put off, stick to, suggest… 4)有些动词如 allow, advise, forbid, permit 等可接动名词作宾语;但有名词或代词作宾语时,则接不定式作宾补.例如The doctor advised taking a week’s rest.The doctor advised us to take a week’s rest.5)begin, continue, hate, like, love 等词后接动名词或不定式意义基本一样,但 like, love 与 should, would 连用时,接不定式作宾语.如Would you like ________(leave) a message?6) need, require, want 表示主语“需要”(被作某种处置)”,后跟动名词的主动式或不定式的被动式.The TV set needs mending again.The TV set needs to be mended again.7).某些动词或短语后接动名词或不定式意义不同.go on doing sth go on to do sth forget doing sth forget to do sthstop doing sth stop to do sth remember doing sth remember to d...
