ay Day is such a day_______ is celebrated by the working people all over the world.A) that B) which C) what D) as 选什么,为什么?

ay Day is such a day_______ is celebrated by the working people all over the world.A) that B) which C) what D) as 选什么,为什么?
ay Day is such a day_______ is celebrated by the working people all over the world.
A) that B) which C) what D) as
选什么,为什么?

ay Day is such a day_______ is celebrated by the working people all over the world.A) that B) which C) what D) as 选什么,为什么?
一 定语从句中关系代词的使用
⒈ 如果修饰人,一般用关系代词who, whom, whose 或that.在定语从句中作主语的一般用who或that, 作宾语的一般用whom, who或that, 作定语并具有物主性质的用whose.（在定语从句中作宾语的关系代词可省略）
如：
①I don’t like people who/that get angry easily.
我不喜欢容易发脾气的人.
（ 关系代词who/ that在定语从句中作主语,不可省略）
②Here is the man (whom/ who/ that) you want to see.
这就是你想见的人.
（ 关系代词whom/ who/ that在定语从句中作宾语,可以省略）
③Is there anyone in your class whose home is in the northeast?
你班上有谁家在东北的?
（ 关系代词whose在定语从句中作定语,不能省略）
注意：用who 还是whom ,完全根据它们本身在定语从句中的地位和作用而定,与先行词在主句中的作用无关.尤其要注意在带有插入语的定语从句中who和whom的选用.
如：
①The person who sent the letter had to pay the postage.
寄信人要付邮资.
（ who sent the letter是定语从句,修饰person, who在定语从句中作主语,因此用主格）
②He is a man who I believe is honest.
他是一个我认为诚实的人.
（ I believe是插入语,去掉该插入语剩下的便是He is a man who is honest,在语法及句意上都能成立,who是定语从句中动词is的主语,故用主格,不用宾格whom.）

⒉ 如果修饰事物,用关系代词which 和that,作宾语时可省略.作介词宾语时,如果介词位于关系代词之前,则用which (不能省) ,而不用that（关系代词that既能代人,又能代物）.whose也可用来指物（此时可用of which来代替）,在定语从句中作定语.
如：
①Don’t buy tomatoes that/ which are green.
不要买颜色还是青的西红柿.
( that/ which 在定语从句中作主语,不能省)
②The fish (that/ which) they sell are not fresh.
他们卖的鱼不新鲜.
（ that/ which 在定语从句中作宾语,可以省）
③The classroom whose door is broken will soon be repaired.
= The classroom the door of which is broken will soon be repaired.
门坏了的那个教室将很快修理.
④The tool with which he is working is called a saw.
=The tool (that/ which) he is working is called a saw.
他干活用的那个工具叫叫锯.
（介词with位于关系代词之前,须用which,不能省,也不能用that）

二 定语从句中关系副词的选用

⒈ when指时间,在定语从句中作时间状语,有时也可用介词+which来代替.
如：
I still remember the day when / on which I first came to Beijing.
我还记得我第一次来到北京那天的情景.
She came at a time when we needed her most.
她是在我们需要她的时候来的.

⒉ where指地点,在定语从句中作地点状语,有时也可用介词+which来代替.
如：
That is the house where/ in which he lived ten years ago.
那是他十年前住过的房子.
I have found a peaceful place where/ in which we can study.
我找到了一个能学习的安静的地方.

⒊ why指原因,在定语从句中作原因状语,常可用for+ which来代替.
如：
I know the reason why/ for which she was so angry.
我知道她为什么那么生气.
Do you know the reason why/for which he came so late?
你知道他来得这么晚的原因吗?

◆应注意关系副词和关系代词在定语从句中的不同使用.
如：
* I’ll never forget the day when I went abroad myself.
我永远忘不了我独自出国的那一天.
( when在从句中代替时间状语on the day,我们可以把这个句子分解为I’ll never forget the day. I went abroad myself on the day.)
* We’ll never forget the days that we spent together.
我们永远也不会忘记我们在一起度过的那些日子.
(that 代替the day,在句中作spent的宾语,that可以省略.该句可分解为We’ll never forget the days. We spent the days together.)

三 way 作先行词之后的定语从句

当“way”表示“方式、方法”在句中作先行词,后被一个定语从句修饰时,引导定语从句可用that ,也可用in which,或什么都不用.
如：
I don’t like the way that he laughed at me.
=I don’t like the way in which he laughed at me.
=I don’t like the way he laughed at me.
我不喜欢他用那种方式来嘲笑我.

四 time 之后的定语从句
time作先行词,前面如有序数词和last修饰时,引导定语从句不能用when,只能用that 或两者都不用.但前面如无序数词或last,常用when(有时也用that)引导定语从句.
如：
This is the last time that I shall give you a lesson.
这是我最后一次给你们上课.
The first time I saw Premier Zhou was in 1958.
我第一次见周总理是在1958年.
I don’t know the exact time when the track and field meet will take place.
我不知道田径运动会举行的确切时间.Key:当先行词前有such, so, as时,关系词应当用as.如：
A wise man seldom talks about such things as he doesn’t understand.
He spoke in such easy English as everybody could understand.
At this time of the day, all buses and trolleys have to carry as many passengers as they can.
It is so easy a book as every schoolboy can read.
Let’s discuss such things as we can talk of freely.
另需注意：
This book is written in such easy English as beginners can understand.（定语从句）
This book is written in such easy English that beginners can understand.（结果状语从句）根据个人所知,as在定语从句中主要是代替which,当前面有the same/so/such时改为as,当然首先要是非限制性定语从句.好像还有置于句首时,就是把定语从句的从句部分一到主句前面之时,解释为就像/正如... 该题选D；

D
such...as...
不明白的再问哟！
祝你学习进步，更上一层楼！ (*^__^*)