1、1. Those are all really important questions and very difficult to answer.句式“be + 形容词 + 不定式”意为“很做某事”。如: This kind of work is easy to complete. 这种工作很容易完成。2. Im not sure how to answer them.不定式可以与疑问词who, what, which, when, how, where 等连用,构成不定式短语,在句中作主语、表语、宾语和宾语补足语等。如:Where to buy this kind of computer i
2、s a problem. 到哪里去买这种计算机是一个问题。I really dont know what to do. 我的确不知道该怎么办了。 3. The important thing is not to stop questioning.这句话中的not to stop questioning 是动名词的否定形式,它由否定副词 not 加上动名词构成。在这句话中,动名词用在系词后作表语。如:He is worried about not going to the concert. 他担心的是不能参加音乐会。To us students, the first task is studyi
3、ng hard. 对我们学生来说,第一任务就是努力学习。4. In the dream, he grew a new type of rice that was as big as a peanut.句式as as 表示程度相同,第一个as是副词,后加形容词或副词的原级。如:Jim is as honest as Billy. 吉姆和比利一样诚实。She works as carefully as her sister. 她和她姐姐工作一样认真。句式not as (so) as 表示一方不如另一方。如:I dont run as (so) fast as you. 我不如你跑得快。5. Sin
4、ce then, he has spent much of his time researching and developing new varieties.表示“花费”,可用于两个句式中:spend on 和spend (in) doing 。如:Each person spent about 100 yuan on food every month. 在伙食上每人每月花100元左右。He doesnt spend all his time (in) working. 他没有把全部精力用在工作上。6. Before her illness, Helen was a bright and h
5、appy girl.before her illness是介词短语,意为“在生病之前”,在句中作状语。我们可以用时间状语从句Before she was ill替换它。这种介词短语作状语的句式可用从句进行替换。如:Nothing can live without air or water. = Nothing can live if there is no air or water. 没有空气和水什么都不能生存。7. With a lot of hard work, he found new ways to help people with T.B.a disease that damages
6、 the lungs.其中to help people with T.B.a disease that damages the lungs是动词不定式短语用在名词way后作定语。不定式有时起形容词作用修饰名词或代词,在句中作定语。不定式作定语时,它的位置在它所修饰的名词或代词之后。如:作式词lo foress!_ _me to do is to cheer. Is there anyone to look after these children? 有人照看这些孩子吗? Are there many places to see in Washington? 在华盛顿有许多可看的地方吗?如果不定
7、式是不及物动词,或者不定式所修饰的名词或代词是不定式动作的地点、工具等,不定式后面应加上介词或副词。如:There is nothing to worry about.没有什么可担心的。 8. He once operated for sixty-nine hours straight without stopping.句中的without stopping 是介词短语作状语,修饰前面的动词operate。介词without后加名词、代词、动名词构成介词短语作状语后可作状语,意为“没有”。如:She went to school without having breakfast. 她没吃早饭就
8、去上学了。9. To remember him, the government set up Bethune Medical School and the Bethune International Hospital in Shijiazhuang.句中的to remember him是动词不定式短语用在句首作状语,表示目的。不定式作状语还可直接用在动词后。如:Emma came to see me yesterday morning. 埃玛昨天上午来看我了。To learn English well, she went to in England. 为了学好英语,她去了英国。10. I to
9、ld them that you made it for me.某些及物动词后面可以加两个宾语,一个表示人,叫间接宾语;一个表示物,叫直接宾语,它们和在一起称作双宾语。双宾语在句子的位置有两种:主语 + 及物动词 + 间接宾语 + 直接宾语主语 + 及物动词 + 直接宾语 + 介词 to 或 for + 间接宾语如: He will make me a new kite. = He will make a new kite for me. 他要给我做一个新风筝。Grandpa often tells us stories. = Grandpa often tells stories to us. 爷爷经常给我们讲故事。