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學(xué)習(xí)啦 > 新聞資訊 > 學(xué)習(xí)資訊 > 八年級(jí)英語(yǔ)期中語(yǔ)法點(diǎn)大全

八年級(jí)英語(yǔ)期中語(yǔ)法點(diǎn)大全

時(shí)間: 燕妮639 分享

八年級(jí)英語(yǔ)期中語(yǔ)法點(diǎn)大全

  八年級(jí)英語(yǔ)期中語(yǔ)法點(diǎn)大全

  could的用法

  I. could表示“可以;能”,是情態(tài)動(dòng)詞,其后應(yīng)加動(dòng)詞原形;

  II. could是can的過去式,表示過去的“能力”;

  例:I could swim ten years ago.

  III. 表示可能性,既表示現(xiàn)在的可能性,也表示過去的可能性,可能性比can弱;

  例:Someone is knocking at the door. Who could it be?

  IV. 用于有禮貌地提出請(qǐng)求建議,或請(qǐng)求許可。

  例:Could I open the door? / Could you help me out?

  2. should的用法

  I. should表示“應(yīng)該”,是情態(tài)動(dòng)詞,其后應(yīng)加動(dòng)詞原形;

  II. should用來(lái)提建議和忠告。

  例:We middle school students should study hard.

  III. should的否定形式為should not,可縮寫為shouldn’t。

  例:We should not/ shouldn’t spend too much time playing computer.

  3. 用could, should來(lái)提建議

  I. 陳述句

  i. could在陳述句中用來(lái)委婉地陳述看法和建議,譯為“不妨…”

  例:You could turn to the teacher for help. 你不妨找老師幫忙。

  ii. should在陳述句中表示比較肯定的忠告,譯為“應(yīng)該…”

  例:You should turn to the teacher for help. 你應(yīng)該找老師幫忙。

  II. 疑問句

  i. could用來(lái)委婉表達(dá)建議或請(qǐng)求許可,肯定答語(yǔ)用Yes,…can./ Sure,否定答語(yǔ)用No,…can’t/ Sorry。

  —Could you please pass me the cup?

  —Yes, I can./ Sure. (No, I can’t/ Sorry. )

  ii. should只用于主語(yǔ)為第一人稱的句子,表示征求意見或建議,語(yǔ)氣比could更加委婉。

  —Should I sit here?

  —OK.

  4. 動(dòng)詞短語(yǔ)

  動(dòng)詞短語(yǔ)的類型有:

  I. “動(dòng)詞 + 介詞”

  此類動(dòng)詞短語(yǔ),作用相當(dāng)于一個(gè)及物動(dòng)詞,后面必須帶名詞或動(dòng)詞ing

  常見的有:look for, look after, wait for, hear from, listen to, depend on…

  例:I’m looking for a job.

  II. “動(dòng)詞 + 副詞”

  此類動(dòng)詞短語(yǔ)可以用作及物動(dòng)詞,也可用作不及物動(dòng)詞。

  i. 用作及物動(dòng)詞時(shí),后面必須帶sb./ sth.。如果sb./ sth. 是名詞,則放在動(dòng)詞之后或副詞之后均可;但如果sb./ sth.是代詞,則必須放在動(dòng)詞之后。

  常見的這類短語(yǔ)有:cheer up, clean up, set up, put up, cut up, work out…

  例:clean up the kitchen = clean the kitchen up/ clean it up

  ii. 用作不及物動(dòng)詞時(shí),不可以帶sb./ sth.。

  常見的這類短語(yǔ)有:start off, get up, come back, get down, get away

  例:I get up early every morning.

  III. “動(dòng)詞 + 副詞 + 介詞”

  此類動(dòng)詞短語(yǔ),作用相當(dāng)于一個(gè)及物動(dòng)詞,后面必須帶名詞或動(dòng)詞ing

  常見的有:look forward to, look down upon, come up with, do well in, run outof…

  例:Never look down upon anyone.

  IV. “動(dòng)詞 + 名詞 + 介詞”

  此類動(dòng)詞短語(yǔ),作用相當(dāng)于一個(gè)及物動(dòng)詞,后面必須帶名詞

  常見的有:make fun of, make use of, pay attention to, take care of, makefriends with…

  例:In class, you should pay attention to your study.

  V. “動(dòng)詞 + 形容詞 + 介詞”

  此類動(dòng)詞短語(yǔ),作用相當(dāng)于一個(gè)及物動(dòng)詞,后面必須帶名詞

  常見的有:be late for, be afraid of, be angry with, be busy with, be short for…

  例:Bill is short for William.

  5. 過去進(jìn)行時(shí)

  構(gòu)成:sb. was/ were doing + 其它部分

  用法:表示過去某一時(shí)刻或某一時(shí)間段之內(nèi)正在發(fā)生的動(dòng)作。

  例:I was reading newspaper at 9:00 last night.

  過去進(jìn)行時(shí)的句子,常常以when或while引導(dǎo)的時(shí)間狀語(yǔ)從句呈現(xiàn)。

  when引導(dǎo)的從句中,動(dòng)詞可以是短暫性動(dòng)詞,也可以是延續(xù)性動(dòng)詞;時(shí)態(tài)可用一般態(tài),也可以用進(jìn)行態(tài)。

  while引導(dǎo)的從句中,動(dòng)詞通常是延續(xù)性動(dòng)詞;時(shí)態(tài)用進(jìn)行態(tài)。

  例:I was doing the dishes when he came into the kitchen.

  I was doing thehomework while my father was reading the magazine.

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