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一、为主题,可以使用它,它是可更换,不定式里的动词形式背后的一门课程...
?1、作主语,可以用it接替,it叫情势主语,动词不定式放在后面叫真正主语
一.To learn a foreign language is not easy.
?It is not easy to learn a foreign language.
2. It’s dangerous to drive very fast.
2、作表语
My idea is to ring him up at once. 我的设法是立刻给他打电话。
要是主语部份含实义动词do,且作表语的动词又是“do”的内容,这时候表语不定式的“to”可以省略。如:All I did was wait here. 我能做的就是在这里等。
3、常可接动词不定式作宾语的动词有:agree(赞成), hope(期望), decide(决定), need(必要), mean(计划), wish(期望), fail(失败), want(想要), begin(入手下手), would like(想要)等。
He has decided to go to the countryside. 他已决心去乡间。
4、“疑问词 动词不定式”结构可以作动词know、think、find out等的宾语。
I don’t know who to ask. 我真不晓得该问谁。
5、“疑问词 动词不定式”可以作动词show、teach、ask等后面的直接宾语。
She told me where to find the earphone. 她告诉我什么地方可以找到耳机。
6、要是宾语过长,可用it作情势宾语,组成“主语 谓语 it 宾语不足语(名词或形容词) to do sth”结构,谓语动词常为find、think、feel等。
I found it difficult to stop him. 我发现拦截他很难题。
7、动词不定式可以作介词的宾语。
Autumn harvest is about to start. 秋收行将入手下手。
I’m worrying about what to do next.? 我正愁下一步该怎么办。
8、作定语的动词不定式与被修饰词有动宾瓜葛。
I have a lot of books to read. 我有很多书要读。
此时,要是动词不定式动词为不及物动词,后面的介词绝对不能省略。
We had only a cold room to live in. 咱们只有寒室一间。
9、作定语的动词不定式与被修饰词有主谓瓜葛。
He is always the first to come and the last to leave. 他老是第一个到,末了一个走。
十、作定语的动词不定式与被修饰词之间只有润饰瓜葛。
We have no time to go to town today. 今日咱们没有时候去城里。
11、作状语的动词不定式常表示目标、缘故、偏向、效果等。
I’m glad to meet you. 见到你,我很雀跃。
They ran over to welcome the foreign guests. 他们跑过来迎接外宾。
12、不定式复合结构“for sb to do sth”可用作主语、表语、定语、状语等。
It’s for her to decide. 这得由她来决定。(表语)
There are many books for you to read. 这有很多书供你浏览。(定语)
The book ids too difficult for children to read. 这本书太难了,孩子们看不懂。(效果状语)
不定式复合结构作主语时,需注重:
It’s 形容词 for / of sb to do sth.
当上面的形容词指的是to do sth的性子时,用介词for。
It’s dangerous for children to swim in the river. 孩子在这条河里泅水很伤害。(泅水这件事变伤害)
当上面的形容词指的是sb的性子时,用介词of。这些形容词常常润饰人:good, bad, polite, unkind, kind, nice, clever, right, wrong, careful, careless
It was careless of you to do that. 你这么做真粗心。(你这个人粗心)
十三、动词hear, see, feel, watch, notice, look at, listen to等后面的动词不定式作宾语补足语时不能带to, 即常见的情势为: hear sb do sth等
Many people like to watch others play games. 许多人喜好看他人玩游戏.
十四、let, make, have后面的动词不定式作宾语补足语, 也不能带to; help后面的动词不定式作宾语补足语, to无关紧要
She let us meet her at the station, but she didn’t come. 她让我们去车站欢迎她,卡她没有来.
十五、十三和十四这两种情形下的动词不定式在改被动语态句子时,必需将省略的to还原,也就是说,动词后需跟带to的动词不定式.
We heard him sing every day.
He was heard to sing every day. 当时天天都听到他唱歌.
十六、跟带to的动词不定式作宾语补足语的动词还有: ask, beg, leave, like, love, hate, prefer, order, teach, tell, believe, find, know, want, think, understand, would like等
情势为: ask sb to do sth
Would you like me to visit him? 要不要我造访他?
I would prefer you not to come tomorrow. 我甘心你来日诰日不要来.
He ask the driver to stop the motobike. 他要那位司机拦下那辆摩托车.
十七、区分以下词组的差别含意:
①like to do sth
like doing sth
②stop to do sth
stop doing sth
③remember to do sth
remember doing sth
④forget to do sth
forget doing sth
十八、It takes sb some time to do sth.花消或人一段时间干某事.
It took me half an hour to do my homework yesterday.昨天我花了半小时做回家功课.
It took Jim an hour and a half to read the book.吉姆花了一个半小时看这本书.
It took mother one and a half hours to do the housework.母亲花了一个半小时干家务.
用汉字表述上面的句型为:It take 人 一段时间 to do sth.
一段时间情势常常为像如许的例子:fifteen minutes15分钟,an hour一个小时, two days两天, half a month半个月,a year and a half一年半...等等
十九、不定式的特别句型too…to…
①too…to 太…以至于…
?He is too excited to speak.
?他太激动了,说不出话来。
?---- Can I help you ? 必要我协助吗?
?---- Well, I'm afraid the box is too heavy for you to carry it, but thank you all the same. 不用了。这箱子太重,生怕你搬不动。谢谢您。
②如在too前有否定词,则全部句子用否定词表达确定, too 后谁人词表达一种婉转含意,意 为"不太"。
?It's never too late to mend. (谚语)
?改过不嫌晚。
③当too 前面有only, all, but时,意思是:特别很是… 等于very。
?I'm only too pleased to be able to help you. 我非常高兴能匡助你。
?He was but too eager to get home. 他特别很是想回家。
2十、不定式的特别句型Why not
?"Why not 动词本相"表达向或人提出建议,翻译为:"为何不……?" "干嘛不……?"
例如:
?Why not take a holiday?
?干嘛不去度假?
??实习?
?依据括号内的动词,用适量的情势填空,空内可能不只填一个词,使句子完全意思正确
1. They usually __________ kites on Sundays. (fly)
2. Look! The dogs __________ after the cat. (run)
3. Miss Gao __________ English in our school since she came here. (teach)
4. The class meeting _________ last Wednesday afternoon. (hold)
5. You should let him __________ the work by himself. (finish)
6. Meimei __________ to wash the old woman’s clothes twice every week. (go)
7. Mr Jiang __________ us Chinese last term. (teach)
8. My father __________ back from Japan tomorrow. (come)
9. It’s seven o’clock now. The Greens __________ breakfast together. (have)
10. Jim __________ many Chinese songs since he came to China. (learn)
11. Please remember __________ the window when you leave the room. (close)
12. After school some students began to do some __________ in the classroom. (clean)
13. English __________ widely in the whole world today. (speak)
?谜底
1. fly, 2. are running, 3. has taught, 4. was held, 5. finish, 6. goes / went,
?7. taught, 8. is going to come / is coming / will come / comes 9. are having,
10. has learned, 11. to close, 12. cleaning,
13. is spoken
?中考英语若何果断动词时态的技能?初三英语专题解说 辞汇别析?初三英语语法系列解说试题和谜底十二个?初中英语知识总结 短语、词组和重点句型归纳?中考英语写作若何"笔底生花"?中考英语冲刺得高分的四大妙招?中考英语作文经典开头体例?中考英语作文经常使用句子采集??
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