八年級上冊英語unit1 3知識點及語法
詞彙和語法是英語學習當中最基礎也是最重要的部分，下面是小編給大家帶來的八年級上冊英語unit1-3知識點及語法，希望能夠幫助到大家!
Unit1
1. We had great fun playing in the water. 我們在水中玩得很高興。
have fun (in) doing sth. 做某事很高興 = enjoy oneself
We had a lot of fun swimming in the sea.
I have great fun talking with that little girl.
練一練(1) I have a good time on the beach. ( 同義句)
I ______ ________ on the beach.
(2) We have fun ______(sing) and ______( dance).
2. I found a small boy crying in the corner. 我發現一個小男孩在角落裏哭。
find sb. doing sth. 發現某人正在做某事
He sat down and watched Wang Wang play with a friend black cat.
感官動詞 see, hear, feel, watch, listen to, look at, find
(1)感官動詞+ 賓語+ 動詞原形 強調看到/聽到整個動作，或整個事件或行爲的全過程
(2)感官動詞+ 賓語+ 現在分詞 強調看到/聽到行動或事件正在進行
I saw him cross the street. 我看見他過了馬路。(從一邊到另一邊)
I saw him crossing the street. 我看見他正過馬路。(正在馬路中間走着)
練一練 (1) I found a dog ______ near the door.
A. was standing B. to stand C. stand D. stood
(2) She heard a little boy ______ English.
A. reading B. reads C. to read D. is reading
3. That made me feel very happy. 那使我感到很愉快。
make sb. do sth. 使某人做某事
使役動詞 have, let, make 後跟不帶to的不定式作賓補
Let me help you.
I’ll have him bring some water.
練一練 (1) Helping others can make us ______ very happy.
A. feeling B. to feel C. feel D. felt
(2) They _____ the boy leave at once.
A. asked B. told C. kept D. made
(3) Mother often ______ me ______ my homework after supper.
A. makes, doing B. lets, doing C. watched, to do D. makes, do
Unit2
1. How often do you exercise ? → How often + 助動詞do(does或did) + 主語 + do sth. ? 疑問詞how often是問頻率(多經常), 在這裏助動詞do(does或did) 是起幫助構成疑問的作用
Once a week / Three times a month / Three or four times a month .
練習. —______ is “Lucky 52” shown on CCTV-2?
—Every week.(2006年，黃岡)
A. How often B. How long C. How soon D. How many times
2. as for...意思是“至於;關於”，常用於句首作狀語，其後跟名詞、代詞或動詞的-ing形式(即動名詞)。如
As for him，I never want to see him here. 至於他，我永遠不希望在這裏見到。
(1). ________(至於，關於) clothes, she likes clothes in fashion.
3. want to do sth.意思是“想要做某事”;
want sb. to do sth.意思是“想要某人做某事”。如：
Do you want to go to the movies with me?你想和我一起去看電影嗎?
The teacher doesnt want us to eat hamburgers.老師不想讓我們吃漢堡包。
練習： His mother wants him ___ at home today.
A. stays B. stayed C. to stay D. staying
4. be good for...表示“對……有益(有好處)”。其反義爲：be bad for...。後接名詞、代詞或動名詞;be good at意爲“擅長……”，後接名詞、代詞或ving形式。be good with意爲“靈巧的;與……相處得好”;be good to意爲“對……友好。
(1).(2011烏魯木齊) 1 think drinking milk is good ____ our health.
B. to C. with D. at
5. try to do sth.表示“ 盡力做某事 ” ，不包含是否成功的意思 / try doing sth. 表示“ (用某一辦法)試着去做某事”。 如:You’d better try doing the experiment in another way. 你最好試試用另一種方法做這個試驗。
練習： He must _____ his sister with her math.
A. try help B. trying to help C. trys to help D. try to help
6. help sb. (to) do sth.幫助某人做某事
.練習：Eating fruit and vegetables can help you ______ more vitamins
A. got B. getting C. to get D. gets
7. be the same as 和…一樣 / 反義詞： be different from 和…不同
練習： in the country is quite _______ that in the city.
A. the same B. different from C. full of same as
your pen _______ Jim’s?
as same same with same as
8. kind of = a little / a kind of 意思是“一種”
練習：How many ______ medicine are used for the children of six years old?
A. kind of B. kinds of C. kind D. kinds
9. keep in good health = keep healthy = stay healthy =be healthy 保持健康
That sounds interesting. 這是“主語+系動詞+表語”結構的簡單句。sound(聽起來)，look(看起來)，smell(聞起來)，taste(嚐起來)，feel(覺得)，seem(好象)，grow(變得) , get(變得)等詞在英語中可用作系動詞，後跟形容詞作表語。如： It tastes good. 這味道好。
The music sounds very sweet. 這音樂聽起來很入耳。
練習：We should keep our classroom ______.
A. cleaned B. clean C. cleaning D. to clean
ough意思是“雖然，儘管” 引導的從句不能與but, however連用，但可與yet, still連用 。 although不能指假設的情況，不能作副詞，放在詞尾。
練習：Although he is very old, ______he works very hard.
A. and B. but C. / D. so
Unit3
1. I’m more outgoing than my sister . → 主語 + 動詞 + 形容詞比較級別 + than + 比較對象
練習：I don’t think Henry is _____ than Tony.
A. much popular B. more popular C. popular D. most popular
2. in some ways 在某些方面; in many ways 在多方面
3. enjoy doing sth. =love like doing sth. 喜歡做某事
練習：She enjoys _____ basketball on Sundays
A. play B to play C playing D have played
4. as/so + 形容詞/ 副詞(原形) + as 和……一樣
它的否定式是：not as/ so + 形容詞/ 副詞(原形) + as 和……不一樣
練習：This math problem is _______that one.
so easy as easy than easier as than
5. all用於三者或三者以上;both用於兩者。同時要注意它們在句中的位置，即位於連繫動詞(be)，助動詞(be , will , shall , should 等)，情態動詞(can , may , must , have to等)的後面;其它動詞的前面。
同步練習
e are lots of colorful on _______ sides of the streets.
er
are your parents?
They doctors.
all both are are
sb. do sth. 使某人做某事
練習：
boss makes the worker _______10 hours every day.
work ing s
.2. Mr Bean enjoys _______ jokes and often makes us _______.
tell; to laugh s; laugh ing; laugh ing; laughing
doing sth. 意爲“ 停止(正在)做的事情” / stop to do sth. 意爲“ 停下(正在做的事)去做某事”
語法：
1.一般過去時
1.一般過去時表示過去某個時間發生的動作或存在的狀態，常和表示過去的時間狀語連用。一般過去時也表示過去經常或反覆發生的動作。
動詞過去式變化規則：
1.一般在動詞末尾加-ed，如：pull-pulled, cook-cooked
2.結尾是e加d，如：taste-tasted
3.末尾只有一個元音字母和一個輔音字母的重讀閉音節，應雙寫末尾的輔音字母，再加-ed，如：stop-stopped
4.以“輔音字母+y”結尾的，變y爲i，再加-ed，如：study-studied
同步練習
1. Gao Shan _______ (pull) up carrots last National Day holiday.
2. I ____________ (sweep) the floor yesterday, but my mother ______.
3 What _____ she _____ (find) in the garden last morning?
She ____ (find) a beautiful butterfly.
4. It ____ (be) Ben’s birthday last Friday 10. We all ___ (have) a good time last night.
5.. He _____ (jump) high on last Sports Day. 12. Helen ____ (milk) a cow on Fridays.
6.. She likes ______ newspapers, but she ______ a book yesterday. (read)
7. He _______ football now, but they _______ basketball just now. (play)
8. Jim’s mother _________ (plant) trees just now.
9. _______ they ________ (sweep) the floor on Sunday? No, they _____.
10. I _______ (watch) a cartoon on Mondays. 18 We ____ (go) to school on Sundays.
2，.英語形容詞比較級的構成
：
英語形容詞比較等級有三個：原級，比較級和最高級。
形容詞比較等級形式變化有規則的和不規則的兩種。
規則變化 :
1)單音節詞末尾加-er(比較級)，-est(最高級)
【例】 small smaller smallest
2)單音節如以e結尾，只加-r(比較級)，-st(最高級)
【例】 fine finer finest
閉音節單音節詞如末尾只有一個輔音字母，須先雙寫這個輔音字母，再加-er(比較級)，-est(最高級) big bigger biggest
少數以-y，-er，ow，-ble結尾的雙音節詞，末尾加-er(比較級)，-est(最高級)。以-y結尾的詞，如-y前是輔音字母，則變y爲-i，再加-er和-est。以-e結尾的詞只加-r和-st。
【例】 clever cleverer cleverest
其它雙音節和多音節詞皆在前面加單詞more和most。
【例】 careful more careful most careful
不規則變化
原級 比較級 最高級
good/well better best
bad worse worst
many/much more most
little less least
注：有些形容詞一般沒有比較等級。如： right, wrong, woolen等。
同步練習
21. His father is____than his mother. ;
A. older four years B. as four years older C. four years older D. bigger four years
22. Maths is more popular than____.
A. any other subject B. all the subjects C. any subject D. other subject
23. China is larger than ____ in Africa
A. any other country B. other countries C. the other country D. any country
24. Tom is stronger than ___ in his class.
A. any other boy B. any boys C. any boy D. other boy
25. When spring comes, it gets____.
A. warm and warm B. colder and colder C. warmer and warmer D. shorter and shorter
26. By and by, ____ students in our class came to like English.
A. more and more B. much and much C. many and many D. less and least
27. At last he began to cry ___.
A. hard and hard B. more hard and more hard
C. harder and harder D. less hard and less harder
28. When spring comes the days get ____ and nights ____.
A. short; long B. long; short C. longer; shorter D. shorter; longer
29. ___ I look at the picture, ____ I like it.
A. The best; the more B. The more; the less C. The more; less D. More; the more
30. ___ he read the book, ____ he got in it.
A. The more; the more interesting B. The less; the more interesting
C. The more; the more interested D. More; more interested
