英语 过去分词 现在分词 后置定语?过去分词 可以做后置定语现在分词 可以做后置定语动名词?能分别造3个简单的句子吗?越简单的越好.以及什么时候用哪个?

比较级comparative degree
在英语中通常用下列方式表示的词：在形容词或副词前加more(如 more natural,more clearly )或加后缀 -er(newer,sooner )。典型的是指形容词或副词所表示的质、量或关系的增加。英语句子中，将比较两个主体的方法叫做“比较句型”。其中，像“A比B更……”的表达方式称为比较级。组成句子的方式是将形容词或副词变化成比较级的形态。
[编辑本段]比较级的构成规则
1．一般单音节词和少数以-er，-ow结尾的双音节词，比较级在后面加-er，*在后面加-est；
（1）单音节词
如：small→smaller→smallest short→shorter→shortest
tall→taller→tallest great→greater→greatest
（2）双音节词
如：clever→cleverer→cleverest narrow→narrower→narrowest
2．以不发音e结尾的单音节词，比较在原级后加-r，*在原级后加-st；
如：large→larger→largest nice→nicer→nicest able→abler→ablest
3．在重读闭音节（即：辅音＋元音＋辅音）中，先双写末尾的辅音字母，比较级加-er，*加-est；
如：big→bigger→biggest hot→hotter→hottest fat→fatter→fattest
4．以“辅音字母＋y”结尾的双音节词， 把y改为i，比较级加-er，*加-est；
如：easy→easier→easiest heavy→heavier→heaviest
busy→busier→busiest happy→happier→happiest
5．其他双音节词和多音节词，比较级在前面加more，*在前面加most；
如：beautiful→more beautiful→most beautiful
different→more different→most different
easily→more easily→most easily
注意：（1）形容词*前通常必须用定冠词 the，副词*前可不用。
例句： The Sahara is the biggest desert in the world.
（2） 形容词most前面没有the，不表示*的含义，只表示"非常"。
It is a most important problem.
=It is a very important problem.
6．有少数形容词、副词的比较级和*是不规则的，必须熟记。
如：good→better→best well→better→best
bad→worse→worst ill→worse→worst
old→older/elder→oldest/eldest
many/much→more→most little→less→least
far →further/farther→ furthest/farthest
[编辑本段]比较级的用法
1．“A + be +形容词比较级 + than + B” 意思为“A比B更……”。
如：This tree is taller than that one. 这棵树比那棵树高。
注意：
① 在含有连词than的比较级中，前后的比较对象必须是同一范畴，即同类事物之间的比较。
②在比较级前面使用much，表示程度程度“强得多”。
如：A watermelon is much bigger than an apple.
③ very, quite一般只能修饰原级，不能修饰比较级。
2．“比较级 + and + 比较级”或“more and more +原级”表示“越来越……”
如：It becomes warmer and warmer when spring comes.
春天来了，天气变得越来越暖和了。
It is getting cooler and cooler.
天气越来越凉爽。
The wind became more and more heavily.
风变得越来越大。
Our school is becoming more and more beautiful.
我们的学校变得越来越美丽。
3．在含有or的选择疑问句中，如果有两者供选择，前面的形容词要用比较级形式。
如：Who is taller,Tim or Tom? 谁更高，Tim还是Tom?
4. “the +比较级……, the+比较级”，表示“越……越……”。
The more money you make, the more you spend.
钱你赚得越多，花得越多。
The sooner，the better.
越快越好。
5. 表示倍数的比较级用法：
①. A is …times the size /height/length/width of B.
如：The new building is three times the height of the old one.
这座新楼比那座旧楼高三倍。(新楼是旧楼的四倍高)
②. A is …times as big /high/long/wide/large as B.
如：Asia is four times as large as Europe.
亚洲是欧洲的四倍大。(亚洲比欧洲大三倍)
③. A is …times larger /higher/longer/wider than B.
如：Our school is twice bigger than yours.
我们学校比你们学校大两倍。
6.形容词、副词的*形式主要用来表示三者或三者以上人或事物的比较，表示“最……”的意思。
句子中有表示范围的词或短语。如：of the three, in our class等等。
如：He is the tallest in our class.
他在我们班里是最高的。
7."否定词语+比较级"，"否定词语+ so… as"结构表示*含义。
Nothing is so easy as this.
=Nothing is easier than this.
=This is the easiest thing.
8. 比较级与*的转换：
Mike is the most intelligent in his class.
Mike is more intelligent than any other student in his class
7.修饰比较级和*的词
1）可修饰比较级的词
①.a bit, a little, rather, much, far, by far, many, a lot, lots, a great deal, any, still, even等。
②. 还可以用表示倍数的词或度量名词作修饰语。
③. 以上词(除by far)外，必须置于比较级形容词或副词的前面。
注意： 使用*要注意将主语包括在比较范围内。
(错) Tom is the tallest of his three brothers.
(对) Tom is the tallest of the three brothers.
2)下列词可修饰*：by far, far, much, mostly, almost。
This hat is nearly / almost the biggest.
注意：
a. very可修饰*，但位置与much不同。
This is the very best.
This is much the best.
b. 序数词通常只修饰*。
Africa is the second largest continent.
8.要避免重复使用比较级。
(错) He is more cleverer than his brother.
(对) He is more clever than his brother.
(对) He is cleverer than his brother.
9.要避免将主语含在比较对象中。
(错) China is larger that any country in Asia.
(对) China is larger than any other country in Asia.
10.要注意对应句型，遵循前后一致的原则。
The population of Shanghai is larger than that of Beijing.
It is easier to make a plan than to carry it out.
11.要注意冠词的使用，后有名词的时候，前面才有可能有名词。
比较：Which is larger, Canada or Australia?
Which is the larger country, Canada or Australia?
She is taller than her two sisters.
She is the taller of the two sisters.
10.连用词
much ,a little ,a bit,even
[编辑本段]使用比较级应注意的问题
1． 比较对象是否明确
比较必须在同类事物之间进行，用that代替天气和人口。如：
My pen is better than yours.
The weather of Harbin is colder than that of Beijing.
2．比较的范围
比较级中的被比对象与比较对象必须属于互不分离的两个范围。比较的对象如在同一范围内。必须加other一词，将比较的个体排除在外。范围内加any other 范围外加any.
He is taller than any other boy in his class.
Canada is larger than any country in Asia.
3． 比较级前的修饰语
常用来修饰比较级的词有：much ,a little , a bit ,a lot ,even ,still ,a great deal of, far ,by far ,any ,rather
及表示倍数的词。修饰可数名词用：many more或few.修饰不可数名词用：much more .
There are many more books in your library than in ours.
His handwriting is much better than mine.
4．比较状语从句中的省略
than后是一个完整的句子，有时为了避免重复，把谓语部分省略。但如果前后时态不同，则不能省略。
The book is more interesting than that one (is interesting).
She is much taller than she was last year.
I think he will be more careful with his study than he is now.
5． 比较级与冠词the的使用
表示“两者中比较……的一个”，要用( the + 比较级 + of the two)的句式.
He is the stronger one of the two boys.
English is the easier language of the two.
6．表示倍数的三个结构
1 ）be + 倍数 + as …as
2 ）be + 倍数 + 比较级 +than
3 ）be + 倍数 + the +名词（尺寸，长度）+of
The house is three times as big as that one .
The house is three times bigger than that one .
The pencil is twice the length of that one
7．比较级 + and + 比较级 → 越来越……
Days are getting longer and longer.
8．the + 比较级 ，the + 比较级 → 越……，越……
The more ,the better.
The more you eat, the fatter you’ll be.
9．the + 序数词 + * + …
Which is the first most useful invention ?
10．one of + *+ 名次复数
He is one of the tallest boys in his class.
11．由物主代词修饰的时候，不用冠词
He is my best friend.
[1]特殊比较级的构成：
原形 比较级 * 备注
far Farther / further Farthest / furthest

Many / much more most

Good / well better Best

old Older / elder Oldest / eldest

little Less Least

Bad / badly / ill Worse Worst

important More important Most important 多音节形容词和副词
Tired / slowly / loudly / clearly /careful / surprised / funny More ~ , most ~
[编辑本段]比较级范例
1） ---- Are you feeling ____?
---- Yes，I'm fine now.
A. any well B. any better C. quite good
D. quite better
答案：B. any 可修饰比较级，quite修饰原级，well的比较级为better.
2）The experiment was____ easier than we had expected.
A. more B. much more C. much
D. more much
答案：C. much可修饰比较级，因此B，C都说得通，但easier本身已是比较级，不需more，因此C为正确答案。
3）If there were no examinations, we should have ___ at school.
A. the happiest time B. a more happier time
C. much happiest time D. a much happier time
答案：D。

一、过去分词和现在分词 作定语,一般说来,如果是单个分词,就做前置定语,如果是分词短语,就做后置定语.但也有一些特殊的情况.
1.this is a developing country.
2.the lady talking with your teacher is a nurse.
3.he is an experienced teacher.
4.Tom hired a young worker called JOhn Hill.
二、动名词可直接放在名词前作定语.不能作后置定语.
Will the swimming pool be open today?