2017年英語三級考試知識點
大學英語三級考試之前的複習，重要的知識點你都掌握好了嗎？下面本站小編給你分享2017年英語三級考試的知識點，歡迎閱讀。
Chemistry
常用句子
Our chemistry paper is too difficult.我們的化學試卷太難了。
I'm thinking whether I can pass or not.我在想我考試能不能及格。
I like chemistry not because itself is interesting but because there are many experiments in chemistry lab.我喜歡化學不是因爲它有趣，而是因爲有好多的化學實驗。
It's dangerous if one doesn't following our teacher's instructions.
如果不按老師的示範去做那將很危險。
Chemistry is important for me because in the future I want to be a chemist.
將來我想當化學家，所以化學對我來說很重要。
Is chemistry more useful than physics?化學比物理重要嗎?
I think chemistry is as important as physics.我認爲化學與物理同等重要。
Chemistry becomes so interesting with our teacher's explanation.
化學經我們老師的講解顯得有趣多了。
Do you know what is H2O?你知道H2O是什麼嗎?
I think chemistry teachers are the same characters with rare hair on the head.
我覺得化學老師都有相同的特點：頭髮少。
Every time I'm dreaming in class our chemistry teacher pulls me back to his humorous explanation.
每次化學課上我昏昏欲睡的時候，我們的化學老師幽默的講解又使我精神振作。
The chemical industry is a fast growing industry in China.化學工業在中國是一種發展很快的工業。
Is this a chemical change or a physical change when wood becomes desks?
木材變成桌子是物理變化還是化學變化? There a chemistry test tomorrow morning.明天上午考化學。
Maths
常用句子
The simplest real numbers are the natural numbers，which are just the ordinary counting number l，2，3…
最簡單的真數是自然數，即平時我們口數的一、二、三…。
One convenient way to visualize the real numbers is by the way of a number line.
將真數形象化的最方便的途徑是通過數軸。
The numberπis sometimes approximated by the rational number 22/7。圓周率π約等於22/7。
Rational numbers and irrational numbers together form the set of real numbers.
有理數與無理數一起構成實數。
In mathematics the symbol A = B means A and B are two names for the same thing.
在數學中A = B意思是A、B是同一事物的兩個名稱。
I become headache with maths problems.我一解數學題就頭痛。
A right angle is an angle of 90°，and a straight angle is one of 180°。
直角是90°角，平角是180°角。
Why do we always have maths in the fourth period?爲什麼我們總在第四節課上數學?
2017年英語三級考試詞組知識點well 也;一樣
【例句】Wang Hai is a worker and a militiaman as well.
王海是個工人，也是個民兵。
【總結】as well常用於肯定句句尾，表示“還，也”等意思。He knows French,and he knows English as well.
他懂法語，他也懂英語。
(一)as well後接as，邊接兩個同類項，表示“不但，而且，和跟”等意思，強調as well前面的人或事物。He came as well as his brother.
不僅他哥哥來了，而且他也來了。
(二)as well as和動詞連用，表示同類事物相比較，結果一樣好。He can speak English as well as you do.
他英語說得和你一樣好。
【拓展】also的用法
also用於實義動詞之前
▲also用於實義動詞之前
They also agree with me.
他們也同意我的看法。also用於be動詞之後
▲also用於be動詞之後
I was also there.
我也在那兒。also用於第一個助動詞之後
▲also用於第一個助動詞之後
His sister has also gone to town.
他的妹妹也到鎮裏去了。also有時放在句首
▲also有時放在句子的最前
Also, some students were tempted to add written comment of their own throughout the paper.
一些學生也冒險通過論文寫出他們自己的評論。also不能放在句末
(that) sb. (should) do 要求某人應該做某事(虛擬語氣)
【例句】Heasked that they (should) be allowed to use a dictionary.
他要求准許他們用詞典。
【總結】①ask sb. to do要求某人做某事。sb.是賓語，to do是賓補。
②ask (that) sb. (should) do要求某人做某事。that引導賓語從句。sb.是賓語從句的主語。把ask (that) sb. (should) do結構中的括號去掉，也可以說成是ask sb. do
for
要，要求
【例句】The miners areasking for another increase in pay.
煤礦工人正在要求再次加薪。
找(人)
【例句】There's an old man at the door,asking for you.
門口有一位老人找你。
【拓展】ask for a lift 要求搭車
ask for a loan借款
ask for a answer要求答覆
ask for a ruling要求作出裁決
ask for a divorce申請離婚
ask for leave請假
ask sb. for a lift請某人讓搭(車)一程
ask sb. for advice取得某人的建議
ask some questions of sb.向某人提問(書面語)
a distance 有一些距離、在遠處
【例句】The shops wereat a distance from where they lived.
商店離他們住所有一段路。
Dogs that bark at a distance bite not at hand.
遠處狗就叫，近身不會咬。
【拓展】from a distance 從遠方
in the distance 在很遠的地方(目不可及)
keep sb. at a distance 於某人保持一定距離
【總結】at a distance 在遠處(目可及)
in the distance 在很遠的地方(目不可及)一定用名詞。
a depth of 在……深處
【例句】When he is at a great depth of a sea,a diver get the bends.
當潛水員潛到一定的深處，就會出現潛函病(深海潛水員因浮出水面太快而感到關節劇痛﹑呼吸困難的症狀)。
【拓展】have a depth at 深達
h a depth at：深達
attain a depth at：深達
to a depth of：深達
in depth：深入的，徹底
at a great depth：在很深處
2017年英語三級考試語法知識點1.定義：用作表語的從句叫做表語從句。
2.構成：關聯詞+簡單句
3.引導表語從句的關聯詞的種類：
(1) 從屬連詞that.
如：The trouble is that I have lost his address. 麻煩是我把他的地址丟了。
(2) 從屬連詞whether, as, as if.
如：He looked just as he had looked ten years before. 他看起來還與十年前一樣。
The question is whether they will be able to help us. 問題是他們是否能幫我們。
注：從屬連詞if一般不用來引導表語從句，但as if卻可引導表語從句，如：
All this was over twenty years ago, but it's as if it was only yesterday.
這都是20多年前的事了，但宛如昨天一樣。
能跟表語從句的謂語動詞一般爲系動詞be, seem, look等。
如：It looked as if it was going to rain. 看起來天要下雨了。
(3)連接代詞who, whom, whose, what, which, whoever, whatever, whichever
連接副詞where, when, how, why.
如：The problem is who we can get to replace her. 問題是我們能找到誰去替換她呢。
The question is how he did it. 問題是他是如何做此事的。
That was what she did this morning on reaching the attic. 那就是她今晨上了閣樓乾的。
難點釋疑：
1.連詞because可引導表語從句。
如：I think it is because you are doing too much. 我想這是因爲你做得太多。
2.在一些表示“建議、勸說、命令”的名詞後面的表語從句中，謂語動詞用虛擬語氣。should+動詞原形表示，should可省略。
My suggestion is that we (should) start early tomorrow. 我的建議是我們明天一早就出發。
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