谁能解释下英语中的主动变被动的情况

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  • 在英语学习中,有许多地方用主动表被动,这对许多中国学生来说是一个难点,常常让他们感到不好学,不好掌握,在此小结一下 1、 Need, want, require(要求,需要), deserve(应得,值得), be worth值得),not bear(经不住) 后面接doing主动表被动。 The book is worth reading. 这本书值得一读。 The old building requires repairing. 这座古建筑需要修了。 These young seedlings will require/need looking after (=need to be looked after) carefully.?这些幼苗将需要小心的照管。 Your hair wants/needs cutting (needs to be cut).?你的头发该剪了。? 2、不定式作定语,放在被修饰词后面,与前面被修饰的名词或代词有动宾关系,又在句子中与另一名词或代词有主谓关系,不定式要用主动表被动含义。 I have much work to do. 我有许多要做的事情。(与work有动宾关系,与I有主谓关系) Tom is looking for a room to live in. Tom在找一间住的房间。(与room有动宾关系,与Tom 有主谓关系) He has a family to support.?他要维持一个家庭。(与family有动宾关系,与he有主谓关系) 3、不定式修饰作表语和宾语补足语的形容词时,结构:主语+系动词+形容词 + 不定式; 动词+宾语+形容词+不定式。如果形容词是表示难易、利弊等含义,如 difficult, easy, comfortable(舒适的), convenient(便利的,方便的), hard, cheap, expensive, 等,不定式用主动表被动。 The question is difficult to answer. 这个问题很难回答。 The work is easy to do. 这项工作很好做。 I found the car comfortable to ride in. 我觉得这种车很好坐。 That makes poetry difficult to write. 那就使得诗很难写。 4、在be to结构中的一些不定式:这种结构中的不定式通常应用主动表被动。下列动词用不定式的主动形式表示被动意义:? Who is to blame for starting the fire?? 这场火灾应由谁负责?? You are to blame for the accident. 你应为这事受动责备。 The house is to let.此房出租。? A lot remains to do.还剩下许多事情要做。? 5、系动词没有被动形式,但有些系动词常表示被动意义。常见的有taste(吃起来), sound (听起来), prove(证明是), feel(摸上去感到), look(看起来),smell(闻起来)等,例如:? Your reason sounds reasonable.? 你的理由听起来很合理。? Good medicine tastes bitter to the mouth.?良药苦口。? 6、一些与can''t(不能)或won''t(不会)连用的动词。常用的有: lock(锁住), shut(关上) , open(打开), act(上演), write(写),cut(砍,切),wear(穿,戴)等,用作不及物动词时,用主动表被动。例如:? The door won''t open.这门打不开。? It can''t move.它不能动。? 7、一些动词如sell(销售) , wash(洗), clean(打扫), burn(燃烧), cook(煮)等与副词如well(好), easily(容易地), perfectly(十分地)等连用 ,描会事物的特性,用主动表被动,结构是主语+动词+加副词。例如:? The book sells well.?这种书很畅销。? These clothes wash easily.?这些衣服很易洗。? The pen writes well. 这笔很好写。 8、主语much, a great deal, little, what等,其表语如是不定式,则用不定式的主动表被动。 What is to do? 做什么? Much is to do. 太多要做的事。 9、在“there be”句型中作主语的定语如果现在分词时,所用的现在分词要用主动表被动意义。 There is nothing doing these days. 这些天没事干。 I see there’s a good idea planning. 我知道又在打好主意。 Exercises: choose the best choice. 1. There are many good films played by ChengLong that are worth _____. A. to be seen B. being seen C. seeing D. to see 2. The food _____ easily and sells _____. A. cooks ; well B. is cooking; good C. is cooked; well D. cooked; good 3. The windows of the building can’t _____., A. be closed B. close C. be closing D. closed Key: 1-3 CAB