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注意:動(dòng)名詞和不定式都可以作主語,動(dòng)名詞作主語表示一般或抽象的多次性行為,不定式作主語往往表示具體的或一次性的動(dòng)作.例如: Playing with fire is dangerous.(泛指玩火) To play with fire will be dangerous.(指一具體動(dòng)作) 但在 It is no use/ good,not any use/ good,useless等后必需用動(dòng)名詞。 2)作表語.例如: Her job is teaching. 3)作賓語.例如: He is fond of playing football. I like swimming. 注① admit,appreciate,avoid,consider, delay, dislike,enjoy,escape, excuse,face,feel. like,finish,forgive,give up, imagine,include,keep,mention,mind,miss,practise,put off,resist, risk,suggest,can’t help,can’t stand(無法忍受)等動(dòng)詞后可以用動(dòng)名詞作賓語,但不能用不定式. 注② forget,go on,like,mean,regret,remember,stop,try等動(dòng)詞可帶動(dòng)名詞或不定式作賓語,但意義上有區(qū)別。 I remember doing the exercise. (我記得做過練習(xí).) I must remember to do it. (我必須記著做這事.) I tried not to go there.(我沒法不去那里.) I tried doing it again. (我試著又干了一次.) Stop speaking. (不要講話。) He stopped to talk. (他停下來講話.) I mean to e early today. (我打算今早些來.) Missing the train means waiting for another hour.(誤了這趟火車意味著再等一個(gè)小時(shí).) 注③在 allow,advise,forbid,permit等動(dòng)詞后直接跟動(dòng)詞作賓語時(shí),要用動(dòng)名詞形式,如果后面有名詞或代詞作賓語,然后再跟動(dòng)詞作賓語補(bǔ)足語時(shí),其賓語補(bǔ)足語用帶 to的不定式.例如: We don’t allow smoking here. We don39。 t allow students to smoke. 注④動(dòng)詞 need,require,want作“需要”解,其后跟動(dòng)詞作它的賓語時(shí),必須用動(dòng)名詞,或不定式的被動(dòng)式.這時(shí),動(dòng)名詞的主動(dòng)式表示被動(dòng)意義.例如:The window needs( requires,wants) cleaning( to be cleaned) 注⑤在短語 devote to,look forward to,stick to,to be used to,object to,thank you for,excuse me for,be( kept) busy,be worth,have difficulty/ trouble/ problem (in),have a good/ wonderful/ hard time(in),there’s no use/good/ need,feel/ look/seem/ like/get down to等后的動(dòng)詞也必須用動(dòng)名詞形式.例如: I look forward to hearing from you soon. 注⑥在 love,hate,prefer等動(dòng)詞后用動(dòng)名詞或不定式無多大區(qū)別。但說話人有所指的時(shí)候,通常用不定式。 注⑦start,begin,continue在書面語中多后接動(dòng)名詞,在口語中多后接不定式。 注⑧在 should(would) like/ love等后須用不定式。 4)作定語.例如: He has a reading room.2.動(dòng)名詞的復(fù)合結(jié)構(gòu) 動(dòng)名詞的復(fù)合結(jié)構(gòu)由形容詞性的物主代詞或人稱代詞的賓格,名詞所有格或普通格加動(dòng)名詞構(gòu)成.在句子開頭必須用名詞所有格或形容詞性的物主代詞.例如: His ing made me very happy.Mary’s crying annoyed him. She didn’t mind his crying. Is there any hope of Xiao Wang’s winning. 3.動(dòng)名詞的時(shí)態(tài)和語態(tài). l)動(dòng)名詞的時(shí)態(tài) 動(dòng)名詞的時(shí)態(tài)分一般式和完成式兩種,如果動(dòng)名詞的動(dòng)作沒有明確地表示出時(shí)間是與謂語動(dòng)詞同時(shí)發(fā)生或在謂語動(dòng)作以前發(fā)生,用動(dòng)名詞的一般式.例如: We are intere