本试题 “So far there_____great changes in my hometown.[ ]A. areB. are going to beC. have beenD. will be” 主要考查您对现在完成时
there be 句型
等考点的理解。关于这些考点您可以点击下面的选项卡查看详细档案。
现在完成时的用法:
1.表示动作发生在过去某个不确定的时间,但对现在留下了某种影响和结果。常被just、already、yet 等副词修饰。如:
-Have you had lunch yet?
-Yes,I have. I've just had it.
2.表示从过去某一时刻开始一直持续到现在的动作或状态。这个动作可能刚停止,可能仍然在进行。
常带有for和since等表示一段时间的状语。如:
He has taught here since 1981
他自1981年就在这儿教书。(可能还要继续教)
I have't seen her for four years.
我有四年没见到她了。
3.表示说话前发生过一次或多次的动作,现在成为一种经验,一般译为汉语“过”。
常与twice,ever,never,three times等时间状语。 如:
I have been to Beijing twice.我去过北京
4. 现在完成时还往往可以同包括现在时间在内的时间状语连用,如:
now,up to these few days/weeks/months/years,this morning/week/month/year,just,today,up to present,so far等:
Peter has written six papers so far.
Man has now learned to release energy from the nucleus of the atom.
There has been too much rain in San Francisco this year.
The friendly relations and cooperation between our two countries have been enhanced in the past few years.
Up to the present everything has been successful.
5.现在完成时往往同表示不确定的过去时间状语连用,如:
already(肯定),yet(否定,疑问),just,before,recently,still,lately,never等:
He has already obtained a scholarship.
I haven't seen much of him recently (lately).
We have seen that film before.
Have they found the missing child yet?
6.现在完成时的"完成用法"
现在完成时的"完成用法"指的是动作发生在过去某一时刻并已结束,但该动作对现在产生了影响,与现在情况具有因果关系。
例如:
He has turned off the light.他已把灯关了。(动作结束于过去,但说明的是现在的情况--灯现在不亮了。)
现在完成时"完成用法"的特点是动作不延续,因此:
该时态只能与表示不定的过去时间状语(如:already,yet,before,recently等)、频度时间状语(如:never,ever,once等)、包括现在时刻在内的时间状语(如:this morning / month /year...,today等)连用。
例如:Have you found your pen yet?你已找到你的钢笔了吗?
7.现在完成时的"未完成用法"
现在完成时的"未完成用法"指的是动作开始于过去某一时刻,一直延续到现在,或可能还要继续下去。
例如:
He has lived here since 1978.自从1978年以来,他一直住在这儿。
(动作起始于1978年,一直住到现在,可能还要继续住下去。)
I have been in the army for more than 5 years.我在部队已经呆了五年多了。
(动作开始于5年前,一直延续至今,有可能还要继续下去。)
此种用法的句中常需一个表示一段时间的状语(由since或for引导),或表示与现在时刻相连的时间状语(如:up to now,so far)等。
例如:
I have heard nothing from him up to now.到目前为止我没有他的任何消息。
注意:现在完成时的未完成用法只适用于延续性动词,不可用于终止性动词,即瞬间完成或延续时间很短的动词。
如:come,go,arrive,leave,join,become,die等。
8.一段时间+has passed+since从句
主语+have / has been+since短语
例如:He has been in the League for three years.
或It is three years since he joined the League. 他入团已三年了
9. 现在完成时常和短语 "up to now /till now","so far" (意思是从过去某一确定的时间一直延续到现在)连用。
Up to/till now he's read many story books. 至今他已读过好多故事书。
I've been to New York three times so far. 至今我已到纽约去过三次。
has gone (to),has been (to),has been (in) 的区别
has gone to:去了没回
has been to :去过
has been in:呆了很久
There be句型:
是一常见的表示“存在”的句型。该结构不表示“存在”意义的现象又广见于书面语及口语,它以否定句的形式出现,用于对某一具体行为和抽象概念的否定。
There在此结构中是引导词,已经没有副词“那里”的含义。
There be 后面的名词是句子的主语,属倒装结构;
1.There be 句型的否定句有两种构成方式,一种是将否定副词not放在be 之后,如:
There isn’t a box in the room.房间里没有盒子。
There aren’t any pens on the desk.课桌上没有钢笔。
There hasn’t been any rain for a week.一周没下雨了。
There won’t be a meeting today.今天没有会议。
另一种是在主语前加上不定代词no , 如:
There is no water in the bottle.瓶子里没有水。
There are no pictures on the wall.墙上没有图画。
There will be no one at home tomorrow morning.明天上午不会有人在家。
There might be no money left。或许没有剩下什么钱。
2.There be 句型的一般疑问句是将be 放在there 之前,回答时用yes或no,后接简单答语。如:
Is there a cake on the table?桌子上有块蛋糕吗?
Yes,there is. / No,there isn’t.是,有。/ 不,没有。
Will there be a party tonight?今晚有聚会吗?
Yes,there will./ No, there won’t是的,有。/ 不,没有。
Have there been any letters from your mother lately?近日你妈妈有信来吗?
Yes,there have./ No, there haven’t.是,有的。/ 不,没有。
3.There be 句型的特殊疑问句主要有how many和how much做引导词两种情况:
How many students are there in your school?你们学校有多少学生?
How much money is there in your pocket?你口袋里有多少钱?
4.There be 句型的反意疑问句
There is a cup on the table, isn’t there?桌子上有只杯子,是吗?
There is some orange in the glass, isn’t there?杯子里有桔汁,是吗?
There are a lot of letters in the mailbox, aren’t there?邮筒里有很多信件,是吗?
There will be a new hospital nearby, won’t there?附近要建一家新医院,是吗?
和have的比较:
1.区别点:there be 意为存在,强调某地有某物,不表示所属关系;have 表示所有关系, 强调某人或某地有某物,这是其基本用法。如:
There are some trees in front of the house.房前有些树。
Tom has many friends in China.汤姆在中国有许多朋友。
2.相同点:在表示结构上的含有时,既可以用there be 句型,也可以用have(has) 来表示。如:
There are many long rivers in China./China has many long rivers.中国有许多长河。
How many days are there in March?/How many days has March?三月份有多少天?
注意:
There与be中间可插入一些表推测的情态动词、表时态的短语和一些动词短语
(如和将来时be going to will、现在完成时 havehas + pp. 、used to结构等连用,注意其构成形式)。
例如:
There must be a pen in the box.
There happened to be some money in my pocket.
There is going to be a meeting tonight.
There has been a big tree on the top of the hill.
There used to be a church across from the bank.
There be + 主语 + doing +介词短语. 例如:
There is a truck collecting rubish outside.
There is a wallet lying on the ground
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