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英语重要知识点:过去完成进行时与将来完成时
难点形成原因:
1.不清楚用法。
2.未注意与它搭配的时间状语。
解决办法:
1.彻底理解过去完成进行时与将来完成时基本用法。
2.注意与它搭配的时间状语。
用法讲解:
一、 过去完成进行时
(一)构成:过去完成进行时是由"had been +现在分词"构成。
She had been suffering from a bad cold when she took the exam. 她在考试之前一直患重感
Had they been expecting the news for some time? 他们期待这个消息有一段时间了吧?
(二)用法:
1. 表示过去某一时间之前一直进行的动作。
过去完成进行时表示动作在过去某一时间之前开始,一直延续到这一过去时间。和过去完成时一样,过去完成进行时也必须以一过去时间为前提。过去完成进行时也是一个相对的时态, 上下文中须有明示或暗示的作为参照的过去的时间。
I had been looking for it for days before I found it. 这东西我找了好多天才找着。
They had only been waiting for the bus a few minutes when it came. 他们只等了几分钟车就来了。
2. 表示反复的动作。
He had been mentioning your name to me. 他过去多次向我提到过你的名字。
3. 过去完成进行时还常用于间接引语中。
The doctor asked what he had been eating. 医生问他吃了什么。
I asked where they had been staying all those days. 我问他们那些天呆在哪儿。
4. 过去完成进行时之后也可接具有"突然"之意的when分句。
I had only been reading a few minutes when he came in. 我刚看了几分钟他就进来了。
She'd only been reviewing her lessons for a short while when her little sister interrupted her.
她温习功课才一会儿,她妹妹就打断她了。
(三)过去完成进行时和过去完成时的比较:
She had cleaned the office, so it was very tidy.
她已经打扫过办公室了,所以很整洁。 (强调结果)
She had been cleaning the office, so we had to wait outside.
她一直在打扫办公室,所以我们不得不在外面等着。 (强调动作一直在进行)
二、将来完成时
(一)构成:will/shall have +过去分词
We hope it will have stopped raining before we set off for the picnic.
我们希望在出发去野餐以前雨就已经停了。
I'll have done all the work by the time you are back this evening.
你们今晚回来的时候我就将做完所有的工作了。
(二)用法:
1. 表示在将来某一时刻将完成或在另一个未来的动作发生之前已经完成的动作。
注意:常与将来完成时连用的时间状语有:
① by (the time / the end of ) + 表示将来时间的短语和句子;
② before (the end of ) + 表示将来时间的词语或句子;
③ when, after等加上表示将来动作的句子等。 例如:
By the year 2050, scientists probably will have discovered a cure for cancer.
到2050年,科学家们可能已经找到治愈癌症的方法了。
By the time you arrive in London, we will have been staying in Europe for two weeks.
等你到达伦敦的时候,我们将已经在欧洲呆了两星期了。
2. 在时间从句和条件从句中,现在完成时可以代替将来完成时,表示将来某时业已完成的动作。例如:
You'll get to like the subject after you have studied it for some time.
在学习这个学科一段时间之后,你就会喜欢它的。
I'll go and see the exhibition as soon as I have finished my work.
我一做完作业就去看展览。
3. 将来完成时还可以表示"可能性",或"设想"。例如:
It's five o'clock;they will have arrived home by now.
已经五点钟了,他们现在应该已经到家了。
(三)将来完成时与一般将来时的比较:
有具体的时间状语要用一般将来时。如:
Mr Smith will return home on the first Sunday next month. 史密斯先生将于下月的第一个星期日回家。
将来完成时的时间状语一般用介词by引入,如:
Mr Smith will have returned home by next month. 到下个月史密斯先生将已回到家了。
英语重要知识点:分词作状语
难点形成原因:
1. 对在句中作时间、条件、原因还是别的状语不是很清楚。
2.分不清何时用现在分词、何时用过去分词。
解决办法:
1.理解分词作状语时可以转换成相应的状语从句。
2.分清何时用现在分词、何时用过去分词。
用法讲解:
1. 分词或分词短语作状语时,可以表示时间、原因、让步、条件,方式或伴随状况。通常可转换成相应的状语从句;表示方式或伴随状况时可以转换成并列句或非限制性定语从句。例如:
Put into use in April 2000 (=When it was put into use in April 2000), the hotline was meant for residents reporting water and heating supply breakdowns. 分词短语作时间状语
Blamed for the breakdown of the school computer network (=Because she was blamed for the breakdown of the school computer network), Alice was in low spirits. 分词短语作原因状语
Given time (=If he is given time), he’ll make a fist-class tennis player. 分词短语作条件状语
We often provide our children with toys, footballs or basketballs, thinking that all children like these things. (= and think that all children like these things.) 分词短语作伴随状语
2. 有时为了强调,分词前可带when, while, if, though, as if, unless等连词一起作状语,以便使句子的意思更清楚、更连贯。例如:
When comparing different cultures, we often pay attention only to the differences without noticing the many similarities.
Though tired, he still continued reading.
3. 现在分词和过去分词作状语时的用法比较。
不管是现在分词还是过去分词单独作状语,其逻辑主语必须与主句的主语一致。分词作状语通常可转换成一个相应的状语从句或并列句,如果状语分句或并列句中的谓语动词为被动结构,就用过去分词;如果状语分句或并列句中的谓语动词为主动结构,就用现在分词。例如:
When compared with the size of the whole earth , the biggest ocean does not seem big at all.
分词部分相当于When the biggest ocean is compared with the size of the whole earth, 主语与分词是被动关系,所以用过去分词。
When comparing it with the size of the whole earth, we find that the biggest ocean does not seem big at all.
When we compare it with the size of the whole earth... 主语与分词是主动关系, 所以用现在分词。
Faced with a bill for$10,000(=Because he is faced with a bill for$10,000), John has taken an extra job.
Whenever he was asked why he was late for class, he would answer carelessly, always saying the same thing (= and he would say the same thing).
注意:
1. 现在分词有两种时态:一般式doing和完成式having done。一般式通常表示与主句的谓语动词所表示的动作同时发生或无先后;完成式则强调分词所表示的动作先于谓语动词所表示的动作。如:
While walking in the street, we met some friends of ours.(同时发生)
Having waited in the queue for half an hour, Tom suddenly realized that he had left his wallet at home. (“等待”先于谓语动词“意识到”)
2. 分词的否定式的构成: not +分词。 Not having received a reply, he decided to write again.
英语重要知识点:常见带介词的to短语归纳
be / get / become used to 习惯于
be given to 喜欢;癖好
be related to 与…有关系
be addicted to 沉溺于;对…上瘾
be opposed to 反对
devote oneself to献身于;专心于
be devoted to 致力于;忠诚于
be admitted to 被…录取;准进入
be reduced to 沦为
reduce…to…使…沦为
be attached to附属于;喜欢;依恋
be adjusted to 适应
be known to 为…所知
be married to 和…结婚
be sentenced to被判处
be connected to 和…连在一起
be exposed to 暴露于;遭受
be compared to 被比喻成
compare… to…把…比作…
be engaged to 与…订婚
be / become / get accustomed to // accustomed to 惯于;有…习惯
be engaged to 与…订婚
get down to 着手做
lead to 导致
object to反对;不喜欢;不赞成
put one’s mind to全神贯注于
give rise to 引起
look forward to 盼望
stick to 坚持
pay attention to 注意
attend to 专心;注意;照料
see to 负责;注意
contribute to对…作贡献;有助于
make contributions to对…作贡献
apply oneself to 致力于
come close to几乎;将近
reply to 回答
add to 增加
add up to 加起来
in addition to除…之外
turn to转向;求助于
feel up to 能胜任于
look up to 尊敬
admit to承认
belong to 属于
take to 喜爱;开始
cling to 附着
fall to 开始
respond to 回答;对…作出回应
accustom oneself to 使自己习惯于
amount to等于
prefer… to…更喜欢
set an example to 给…树立榜样
refer to 谈到;参考;查阅
agree to sth. 同意某事(比较:agree to do sth. 同意做某事)
prefer… to…更喜欢
take / make a trip to到…地方去
join…to…把…和 …连接起来
turn a blind eye to对…视而不见
turn a deaf ear to 对…充耳不闻
show honor to向…表示敬意
put an end to(bring… to an end) 结束
set fire to 放火烧……
drink (a toast) to 为……干杯
propose a toast to 提议……
happen to… 发生了……事
occur to sb. 想起;想到
total up to 总计达
be close to 几乎;将近
hold to 坚持;抓住
help oneself to 随便用……
hold on to 抓住;固守
do harm to 对……有害处
do wrong to 冤枉某人
date back to 追溯到
when it comes to… 谈到……时
come to 来到;达到;结果为 (比较:come to do sth逐渐做某事)
give an eye to着眼于
have an eye to doing 打算
the key to ……的答案
describe to 向……描述
treat sb. to sth. 请某人吃……
trust sth. to sb.把某物委托给某人
pay a visit to 参观……
access to 进入;取得的方法
be a stranger to 不习惯;对……陌生
on one’s way to 在去某处的路上;在达成某事的过程中
be kind to 对……和善
be important to 对……重要
be senior to 年龄长于……
be equal to 和……相等
be particular to ……所特有的(比较:be particular about 对……过于讲究;挑剔)
be subject to 服从;隶属;易遭受患
be familiar to 为 ……熟悉
be similar to 和……相似
be open to 对……开放
be loyal to 对……忠诚
be helpful to对……有益处
be useful to对……有用
be good to sb对某人好(比较:be good for 对……有益处)
be bad to 对……不好
be bad for(比较:对……有害处)
be new to 对……不习惯;对……陌生
as to 关于;至于
next to(否定词前)几乎;
be due to do sth.预定要做某事
next to ……的旁边
due to 由于;归因于……
thanks to 多亏了;由于
owing to 由于;因……的缘故
in / with regard to 关于
in /with relation to 关于;就……而论
subject to 在……条件下;依照
be given to 沉溺于
be related to 与…相关
get down to着手做
lead to 着手做
object to / be opposed to 反对
put one’s mind to全神贯注于
be equal to 胜任
devote oneself to献身于
give rise to 引起
look forward to 盼望
pay attention to 注意
lead to通向 see to 负责
access to 接近(某地的)方法
be addicted to 沉溺于… 对…上瘾
according to 根据
contribute to 为…作贡献
如:
1. access to 接近,进入(某地的)方法; 通路
The only access to that building is along that muddy track.
到那栋建筑的唯一通路是沿着那条泥泞的路走。
2. according to 按照,依照,视……而定
The work was done according to his instructions.
那工作是依照他的指示做的。
3. be addicted to 沉溺于……,对……上瘾
He became addicted to the drug.
他上了毒瘾。
4. belong to 属于
This dictionary belongs to me.
这本词典是我的。
5. contribute to 为……做贡献,为……撰稿
Everyone should contribute what he or she can afford to society.
人人都应该尽自己的能力为社会做贡献。
6. devote to 献身,致力于……
He has devoted his life to helping disabled people.
他一生献身于帮助残疾人。
7. due to 因为,由于……而起
His lateness was due to the very heavy traffic on the motorway.
他迟到是因高速公路上车辆过多所致。
8. be equal to 与……相当,有能力胜任……的
Bill is quite equal to running the office.
比尔的能力足以管理这个部门。
9. get close to 靠近,接近
Today many people like to go out to get close to nature.
如今许多人喜欢到户外去接近大自然。
10. get down to 开始做某事,认真处理某事
It’s time I got down to some serious work.
我该认真干点正事了。
11. hold to 忠于……,坚持,遵循
Whatever your argument, I shall hold to my decision.
不管你怎样争辩,我将坚持我的决定。
12. help oneself to 自取,自用(食物,饮料等)
Help yourself to a cigarette.
请随便用香烟吧。
13. look forward to 盼望,期待
We are so much looking forward to seeing you again.
我们非常盼望再见到你。
14. lead to 导致
This misprint led to great confusion.
这个印刷错误造成很大的混淆。
15. prefer…to…两者间更喜欢……
I prefer walking to cycling.
我愿意步行,不愿意骑自行车。
16. pay attention to 注意
Pay attention to what the teacher is talking about!
注意老师说的话!
17. refer to 提到,涉及到,关系到,参考,查阅
What I have to say refers to all of you.
我要说的事和你们大家都有关。
18. relate to 与……有关,涉及……
Wealth is seldom related to happiness.
财富鲜于幸福有关。
19. see to 照看或处理某事物
Will you see to the arrangements for the next committee meeting?
你来处理下次委员会会议安排,好吗?
20.stick to 坚持,不改变或不放弃
We don’t want to hear your opinions; stick to the facts!
我们不想听你的想法,只讲事实!
21.turn to 转向,求助于,转而做
The more depressed he got, the more he turned to drink.
他情绪越低落越是借酒浇愁。
22.used to 习惯于……,适应……
She is quite used to working hard.
她很习惯做艰苦的工作。
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