不管是國中還是升上高中，很多人都覺得英語是最難學的一門科目，因為學習英語要熟記大量的詞彙和語法。下面是本站小編為大家整理的英語重要的知識點，希望對大家有用!
關係代詞引導的定語從句
指人，在從句中做主語
(1) The boys who are playing football are from Class One.
(2) Yesterday I helped an old man who lost his way.
2. whom指人，在定語從句中充當賓語，常可省略。
(1) Mr. Liu is the person (whom) you talked about on the bus.
(2) Mr. Ling is just the boy whom I want to see.
注意：關係代詞whom在口語和非正式語體中常用who代替，可省略。
(3) The man who/whom you met just now is my friend.
3. which指物，在定語從句中做主語或者賓語，做賓語時可省略
(1) Football is a game which is liked by most boys.
(2) This is the pen (which) he bought yesterday.
4. that指人時，相當於who或者whom;指物時，相當於which。在賓語從句中做主語或者賓語，做賓語時可省略。
(5) The number of the people that/who come to visit the city each year rises one million.
(6) Where is the man that/whom I saw this morning?
5. whose通常指人，也可指物，在定語從句中做定語
(1) He has a friend whose father is a doctor.
(2) I once lived in a house whose roof has fallen in.
whose指物時，常用以下結構來代替
(3) The classroom whose door is broken will soon be repaired.
(4) The classroom the door of which is broken will soon be repaired.
(5) Do you like the book whose cover is yellow?
(6) Do you like the book the color of which is yellow?
英語知識總結關係副詞引導的定語從句
1. when指時間，在定語從句中做時間狀語
(1) I still remember the day when I first came to the school.
(2) The time when we got together finally came.
2. where指地點，在定語從句中做地點狀語
(1) Shanghai is the city where I was born.
(2) The house where I lived ten years ago has been pulled down.
3. why指原因，在定語從句中做原因狀語
(1) Please tell me the reason why you missed the plane.
(2) I don”t know the reason why he looks unhappy today.
注意：關係副詞引導的從句可以由“介詞+關係代詞”引導的從句替換
(1) The reason why/ for which he refused the invitation is not clear,
(2) From the year when/in which he was going to school he began to know what he wanted when he grew up.
(3) Great changes have taken place in the city in which/where I was born.
英語常考知識點第1課：
1、be(是)動詞的用法：am接I;is接第三人稱單數，即除you、I外;are接表示多個人或事物，即複數。(我是am，你是are，is連線它、她、他，單數is，複數are)。
2、not是表示否定的詞：不是的表達，am not，is not(isn’t)，are not(aren’t)。
3、“一個”和“幾個”的問題：“一個”是a+名詞;“多個”是名詞後面加s。
4、以母音開頭(如O、E等)，前面的冠詞用an。
第2課：
1、及物動詞與不及物動詞的'區別：及物動詞後面接賓語;而不及物動詞後面不接賓語。如I like ice cream ，It hurts。
2、主語是he、she、it和單數名詞時，動詞要發生第三人稱的變化，即加s。
3、否定的用法：在動詞之前加do not或does not。I、You和複數名詞做主語時，否定就用do not;凡是單數名稱和he、she、it做主語，否定就用does not。
第3課
1、my(我的)、your(你的)、his(他的)、her(她的)、their(他們的)、our(我們的)、its(它的)+名詞，如my love，your love 。
2、名詞所有格形式為：名詞+’s，表示“„„的”，如Sophie’s world，children’s Day，Japan’s tomorrow。
