英语中,V+to be done都=V+doing?

英语中,V+to be done都=V+doing?

动名词
测试的重点在于判断哪些动词或结构后要求接动名词,以及动名词的时态和语态.
（1）接动名词作宾语的动词 这些动词有：admit,allow,anticipate,appreciate,avoid,consider,deny,delay,enjoy,excuse,favor,fancy,finish,imagine,keep,mind,miss,permit,postpone,practise,prevent,resent,resist,risk,suggest等.
例12 Many people favor ____ more nuclear power plants.
A) to build B) build C) built D) building
答案是（D）
例13 They are considering ____ the house before the prices go up.
A) to buy B) buying C) buy D) being bought
答案是（B）.
（2）动名词的短语 这些短语有：be opposed to,be used to,can't help,feel like,give up,go on,insist on,keep on,leave off,look forward to,object to,put off,succeed in等.
例 14 She was so angry that she felt like ____ something at him.
A) to throw B) throwing C) to have thrown D) having thrown
答案是（B）.
（3）名词在其它结构中的使用 to be busy doing sth.to spend/waste time（in）doing sth.have difficulty/trouble （in）doing sth.to be no use /good （in）doing sth.There is some（much…）point/sense/use/…（in）doing sth.be worth doing
例15 Jean did not have time to go to the concert last night because she was busy ____ for her examination.
A) to prepare B) to be prepared C) preparing D) being prepared
答案是（C）.
（4） need,require,deserve,demand,want接动名词,要用主动形式表示被动涵义（相当 于动词不定式的被动形式,即：V＋doing=V＋to be done） 例16 His last year's trousers are now outgrown and need ____ a little.
A) to lengthen B) to be lengthening C) lengthening D) lengthened
答案是（C）.这里的lengthening 亦可用to be lengthened替代.