八年級上冊的英語知識量比較多，想學好的學生要積極做好知識點的總結，課後要加強知識的複習。下面是本站小編為大家整理的八年級英語上冊常考知識點，希望對大家有用!
情態動詞的定義與基本用法：
(一)情態動詞的定義 情態動詞表示說話人對某一動作或狀態的態度。
(二)情態動詞的特點 1)有一定詞義; 2)不受主語人稱和數的變化影響;
3)與主要動詞的原形(或稱不帶to的.不定式)一起構成謂語(除ought to作固定片語看待)。
(三)情態動詞的分類和意義意義情態動詞
(四)情態動詞的基本用法
1. can (could)1)表示能力，could主要指過去時間。Two eyes can see more than one. 兩隻眼比一隻眼看得清。Could the girl read she went to school? 這女孩上學前能識字嗎?
2)表示可能(理論上或是邏輯判斷上)。
The temperature can fall to -60℃, that is 60℃ below freezing. 氣溫可降至-60℃，也就是零下60℃。
He can't (couldn't) have enough money for a new car. 他不可能有足夠的錢買新車。
You mustn't smoke while you're walking around in the wood. You could start a fire. 在林子裡走時勿吸菸，那樣可能會引起火災。
3)表示允許。Can I have a look at your new pen? 我可以看一看你的新鋼筆嗎?He asked whether he could take the book out of the reading-room.他問他可不可以把書帶出閱覽室。
4)表驚異、懷疑、不相信等態度。主要用於否定句、疑問句或感嘆句中。
Where can (could) they have gone to? 他們會去哪兒了呢?
He can't (couldn't) be over sixty. 他不可能超過六十歲。
How can you be so careless? 你怎麼這麼粗心?
5)比較委婉客氣地提出問題或陳述看法。
Can (Could) you lend me a hand? 幫我一把好嗎?
I'm afraid we couldn't give you an answer today. 恐怕我們今天不能給你答覆。
八年級英語必背知識點d like =want , would like to do sth=want to do sth . 想要做某事
would like sb. to do sth .=want sb. to do sth 想要某人做某事
would you like ...? 其後用some 不用any . 句子:Would you like to do sth .
肯定回答:Yes ,please ./sure ,thanks ./Yes ,I’d like to./Yes ,I’d love to 否定回答:No, thanks …/Sorry ,I’m afraid I can’t .
to do sth .盡力做某事;試圖做某事;設法做某事,但不一定成功.否定式:try not to do sth.
try doing sth .試著做某事,看看會發生什麼情況. have a try 試一試
3.a bit 與a little
1)兩者修飾動詞,形容詞,副詞或比較級,
2)a little 可以直接修飾不可數名詞,相當於a bit of
a try 試試看, have a look 看一看 have a headache頭疼 have a rest 休息
have a meeting 開會 have a good time 玩得愉快 have a fever發燒
of =a lot of 很多,大量 ,常用於肯定句中.既可修飾可數相當於many , 又可修飾不可數,相當於much . a lot 相當於very much ,多與動詞連用,修飾形容詞,副詞的比較級.
6.提出建議:
1)Let’s do sth.讓我們做…吧.
2)How about /what about doing sth ?做..怎麼樣
3)Why not do sth ?為什麼不…?
4)Would you like to do …?你願意做….嗎?
5)Shall we do …?我們做…好嗎?
6)You’d better(not) do ..你最好(不)做某事.
ks for sth. =Thank you for sth. 因…而感謝.後V+ing . Thanks to 幸虧,由於,歸功於.
e a message留個口信, take/have a message for sb.給某人帶個口信.
from sb.=get /receive a letter from sb . 收到…的來信 hear about /of 得悉,聽說
Hear out 聽完 hear to 同意
’t wait to do sth .迫不及待做某事 wait for 等候…,後接等待的物件,名詞或代詞
wait to do sth .等著做某事
11.三到達 :arrive at (小地方),arrive in (大地方),get to =reach 注意:跟
home ,here ,there 等副詞時,不加介詞.
e相當,很,相當於very,區別, quite a ../ quite an ..而very 只能放在a /an 後
八年級英語知識歸納重點短語
1. foot---feet 腳 <復> tooth---teeth 牙齒 <復>
2. have a cold 感冒
3. have a stomachache 胃疼
4. have a sore back背疼
5. have a sore throat喉嚨疼
6. have a fever發燒
7. lie down and (have a)rest 躺下休息 have a rest 休息
8. hot tea with honey 加蜜的熱茶
9. see a dentist 看牙醫 see a doctor 看醫生
k lots of water多喝水
of ,a lot of, a lot
a lot of=lots of，可以修飾可數名詞複數和不可數名詞，一般用在肯定句中。：There are lots of ( a lot of) books in our library.
There is a lot of water on the ground
a lot,是一個副詞片語，跟動詞連用;表示十分，很等意思; Thanks a lot.
12. have a toothache牙疼
13. That’s a good idea好主意
14. go to bed 去睡覺 go to bed early 早上床睡覺
15. feel well感到好 feel ill 感到不舒服
I don’t feel well= I’m not feeling well
我感覺不舒服.
16. start doing/ to do sth開始做某事
TO DO 是一件事情完成了，開始做另外一件事情
DOING是原來的那件事情做到一半，現在又開始做了，是同一件事情。
17. two days ago兩天前
18. get some rest 多休息, 休息一會兒
19. I think so我認為是這樣
