本试题 “用所给词的适当形式填空1. There are so many people in the street! It is really too ____ (crowd), isn't it?2. At school we are all ____ (friend) to e...” 主要考查您对可数名词（单数名词，复数名词）
形容词
现在完成进行时
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。
| 情况 | 构成方法 | 例词 | 读音 |
| 一般情况 | 在词尾加-s | desk→desks map→maps |
-s在清辅音后发/s/ |
| day→days girl→girls |
-s在元音和浊辅音后发/z/ | ||
| 以s，x，ch，sh结尾的词 | 在词尾加-es | bus→buses box→boxes watch→watches fish→fishes | -es发/iz/音 |
| 以辅音字母加-y结尾的词 | 变y为i再加-es | family→families factory→factories party→patries |
-ies发/iz/音 |
| 以元音字母加-y结尾的词 | 在词尾加-s | day→days boy→boys key→keys |
-s发/z/音 |
| 以f或fe结尾的词 | 变f或fe为v再加-es | knife→knives life→lives wife→wives half→halves |
-ves发/vz/音 |
| 以辅音字母加-o结尾的词 | 在词尾加-es | potato→potatoes tomato→tomatoes hero→heroes |
-es发/z/音 |
| 以元音字母加-o结尾的词 | 在词尾加-s | radio→radios zoo→zoos |
-s发/z/音 |
形容词的几个特殊用法：
most 同形容词连用而不用 the, 表示 " 极,很,非常, 十分"。
It's most dangerous to be here. 在这儿太危险。
I cannot do it, it's most difficult. 我干不了这件事，太难了。
"The+形容词比较级..., the+形容词比较级..." 表示 " 越... 就越..."。
The more you study, the more you know. 你学的越多, 就知道的越多。
The more I have, the more I want. 我越有就越想要有。
The more, the better. 越多越好。
" 形容词比较级 + and + 形容词比较级 ", 表示 " 越来越... "。
It's getting hotter and hotter. 天气越来越热了.
It's pity he is getting poorer and poorer. 真可怜他越来越穷了。
The computer is cheaper and cheaper. 计算机越来越便宜。
The more and more people focus on the meeting next year. 越来越多的人关注明年的会议。
主语+谓语(系动词)+as+形容词原形+as+从句。表示两者对比相同。
This box is as big as mine. 这个盒子和我的一样大。
This coat is as cheap as that one. 这件衣服同那件衣服一样便宜。
I study English as hard as my brother. 我同我兄弟一样学习努力。
the + 形容词 表示某种人。
He always helps the poor. 他经常帮助穷人。
I like to have a talk with the young. 我喜欢同年轻人谈话。
The rich sometimes complain their empty life. 富人有时抱怨他们空虚的生活。
The police led the old man across the street. 警察领老人横过马路。
以-ly结尾的形容词
1） 大部分形容词加-ly可构成副词。但 friendly，deadly，lovely，lonely，likely，lively，brotherly，仍为形容词。
改错：(错） She sang lovely. （错） He spoke to me very friendly.
（对） Her singing was lovely. （对） He spoke to me in a very friendly way.
2）有些以-ly 结尾的词既为形容词，也为副词。
daily，weekly，monthly，yearly，early
The Times is a daily paper.
The Times is published daily.
too+adj.+to句型 “太…而不能”
He is too young to go to school.
=He isn’t old enough to go to school.
=He is so young that he can’t go to school.
形容词的位置:
1.形容词一般放在名词前作定语
单个形容词修饰名词时，一般要放在名词的前面。它们的前面常常带有冠词、形容词性物主代词、指示代词、数词等。例如：
a red flower一朵红花
an interesting story一个有趣的故事
six blind men 六个盲人
my own house我自己的房子
如果有两个或两个以上的形容词修饰一个名词时，则由它们和被修饰的名词之间的密切程度而定，越密切的形容词越靠近名词。
如果几个形容词的密切程度差不多则按音节少的形容词放在前面，音节多的形容词放在后面。
2.当形容词所修饰的词是由some,any,every,no等构成的不定代词时，形容词必须置于名词之后。例如：
She has something new to tell me.她有一些新的情况告诉我。
I have nothing important to do today.今天我没有重要的工作要做。
Do you know anybody else here?这儿你还有认识的人吗？
3.形容词后面有介词短语或不定式短语时，形容词必须置于名词之后。例如：
It is a problem difficult to work out.这是一道难以解决的问题。
Edison is a student difficult to teach.爱迪生是个很难教的学生。
This is a kind of flowers easy to grow.这是一种易栽的花。
4.用 and 或 or 连接起来的两个形容词作定语时一般把它们放在被修饰的名词后面。起进一步解释的作用。例如：
All people,young or old,should be strict with themselves.
所有的人，无论老少，都应该严格要求自己。
We are building a new school, modern and super.
我们正在建一所现代化的高档次的新型学校。
All countries, rich and poor, should help one another. 所有的国家，无论穷富都应该互相帮助。
5.有少数形容词，如enough和possible，既可置于所修饰的名词前面也可以置于它所修饰的名词之后。例如：
Do you have enough time(time enough)to prepare?你有足够的时间做准备吗？
Maybe it will be a possible chance(chance possible)for you.或许它将成为一次可能的机遇。
6.有些形容词，置于名词之前与之后，含义不尽相同。例如：
the writer present 出席的作者
the present writer 现在的作者
7.表示长，宽，高，深，及年龄的形容词，应放在相应的名词之后。
This river is about 100 metres wide.
The building is more than 50 metres tall.
He is less than 40 years old.
8. enough修饰名词时，在名词前后都可以。
They said that they had enough food.= They said that they had food enough.
enough 修饰形容词和副词，位于其后。
He is old enough to join the army.
He isn’t old enough to go to school.
9.形容词else通常放在疑问代词，疑问副词或不定代词后
what/who/where/when/when else
something/anything/nothing…else
What else did you do?
Do you have anything else to say?
10.由两个或两个以上的词组成的形容词词组修饰名词时须放在名词之后。
This is the book easy to read.
这是一本容易读的书。
现在完成进行时主要用法：
（一）表示从过去某时开始一直持续到现在的动作，并且还将持续下去。
The Chinese have been making paper for two thousand years.
中国有2000年的造纸历史。
（动作还将继续下去）
I have been learning English since three years ago.
自从三年前以来我一直在学英语。
（动作还将继续下去）I study for English since 10 years ago.
（二）表示在说话时刻之前到现在正在进行的动作。
We have been waiting for you for half an hour.
我们已经等你半个钟头了
(人还没到，如同在电话里说的，还会继续等)
（三）有些现在完成进行时的句子等同于现在完成时的句子。
They have been living in this city for ten years.
They have lived in this city for ten years.
他们在这个城市已经住了10年了。
I have been working here for five years.
I have worked here for five years.
我在这里已经工作五年了。
（四）大多数现在完成进行时的句子不等同于现在完成时的句子。
I have been writing a book.（动作还将继续下去）
我一直在写一本书。
I have written a book.（动作已经完成）
我已经写了一本书。
They have been building a bridge.
他们一直在造一座桥。
They have built a bridge.
他们造了一座桥。
（五）表示状态的动词不能用于现在完成进行时。
I have known him for years.
我认识他已经好几年了。
I have been knowing...
这类不能用于现在完成进行时的动词还有：love爱，like喜欢，hate讨厌，等等。
（六）一些现在完成时的句子也与现在完成进行时的句子含义相同
延续性动词在现在完成时与现在完成进行时时态中使用，句意相同。例如：
She has slept for 6 hours and still can not wake up.
She has been sleeping for 6 hours and still cannot wake up.
（七）表示现在以前一直在进行的动作强调动作的未完成性
It has been raining for 3 days。
现在完成进行时与现在完成时的区别：
1. 现在完成时强调动作的完成，而现在完成进行时强调动作的延续，因此，表示动作的完成，只能用现在完成时，而不能用现在完成进行时。如：
He has changed his idea. 他改变了想法。
2. 在表示动作的延续时，虽然既可用现在完成时，也可用现在完成进行时，但现在完成进行时强调动作的进行。
因此在需要明确表示动作还要持续下去时，应用现在完成进行时。如：
We have been studying here for two years. 我们在这儿已经学习了两年了。
3. 在许多情况下，现在完成时表示动作已经完成，而现在完成进行时却并非如此。如：
He has cleaned the window. 他把窗户擦干净了。(动作已完成)
He has been cleaning the window. 他一直在擦窗户。(动作不一定完成)
4. 有些静态动词只能用于现在完成时，一般不能用于现在完成进行时。如：
I’ve known him for many years. 我认识他有许多年了。
The war has lasted for a long time. 这场战争持续了很长时间。
5. 有少数动词(如live, work, teach, study等)用两种时态都可以，意思差别不大。如：
I’ve lived [been living] here for 30 years. 我在这儿住了30年了。
How long have you worked [been working] here? 你在这里工作多久了?
6. 现在完成时与现在完成进行时的相通性：在表达一个从过去开始而现在仍在继续或刚刚结束的动作时，某些动词既可以用现在完成时，也可以用现在完成进行时，如:
expect, hope, learn, lie, live, look, rain, sleep, sit, snow, stand, stay, study, teach, wait, want, work等。如：
你学习英语多久了?
正：How long have yon learnt English?
正：How long have you been learning English?
他已经睡了十个小时了。
正：He has slept for ten hours.
正：He has been sleeping for ten hours.
过去完成时与现在完成区别:
1）过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作；
现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响。例：
I saw this film yesterday.
（强调看的动作发生过了。）
I have seen this film.
（强调对现在的影响，电影的内容已经知道了。）
Why did you get up so early?
（强调起床的动作已发生过了。）
Who hasn't handed in his paper?
（强调有包装，可能为不公平竞争。）
2）过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语。
一般过去时的时间状语:yesterday, last week，…ago, in1980, in October, just now, 具体的时间状语
现在完成时的时间状语：for, since, so far, ever, never, just, yet, till / until, up to now, in past years, always,不确定的时间状语
共同的时间状语:this morning, tonight,this April, now, once，before, already, recently，lately例：
She has returned from Paris.
她已从巴黎回来了。
She returned yesterday.
她是昨天回来了。
3）现在完成时可表示持续到现在的动作或状态，动词一般是延续性的，如live, teach, learn, work, study, know.
过去时常用的非持续性动词有come, go, leave, start, die, finish, become, get married等。例：
He has been in the League for three years.
(在团内的状态可延续)
He has been a League member for three years.
(是团员的状态可持续)
He joined the League three years ago.
( 三年前入团，joined为短暂行为。)
I have finished my homework now.
---Will somebody go and get Dr. White?
---He's already been sent for.
4）句子中如有过去时的时间副词（如 yesterday, last, week, in 1960）时，不能使用现在完成时，要用过去时。
（错）Tom has written a letter to his parents last night.
（对）Tom wrote a letter to his parents last night.
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