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八年級上冊英語主要知識點
在日復(fù)一日的學(xué)習(xí)中,很多人都經(jīng)常追著老師們要知識點吧,知識點是知識中的最小單位,最具體的內(nèi)容,有時候也叫“考點”。為了幫助大家更高效的學(xué)習(xí),下面是小編幫大家整理的八年級上冊英語主要知識點,供大家參考借鑒,希望可以幫助到有需要的朋友。
1.由that引導(dǎo),由于that沒有任何意義,也不充當(dāng)任何句子成分。因此that在非正式文體中可以省略。這類賓語從句通常表達(dá)一種陳述意義。
e.g.He told me (that) he would go to Wuhan.
Tom says (that) he must study hard.
She told me (that) she was a student.
(1)如果由and連接兩個并列的賓語從句時,第二個that則不能省略。
e.g.She said she liked English very much and that she didn’t like math at all.
(2)常接that引導(dǎo)的賓語從句的謂語動詞有:believe, expect, explain, feel, hear, hope, imagine, prefer, promise, report, say, see, tell, think, understand, warn, wish等。
2.由連接代詞或連接副詞who, whose, what, which, when, where, how, why引導(dǎo),含有“誰、什么、哪個、什么時候、什么地方、怎樣、為什么”等特殊疑問意義。
e.g.Do you know who they’re talking about?
Can you tell me what they’re looking for?
I don’t know where she has gone.
I wonder how she can find us.
She didn’t tell me where her hometown was.
3.由從屬連詞whether和if引導(dǎo),含有“是否,能否,對否,有否”等一般疑問意義。
e.g.She asked me if I could help her.
Jim wanted to know whether I had taken his English book.
Please tell me whether you can come or not.
在這類賓語從句中要注意兩點:
(1)if引導(dǎo)賓語從句和狀語從句的區(qū)別
if引導(dǎo)賓語從句時意為“是否”,從句中該用什么時態(tài)就應(yīng)用什么時態(tài)。
if引導(dǎo)條件狀語從句時意為“假如”,從句中應(yīng)用一般現(xiàn)在時代替一般將來時。
e.g.She wanted to know if you were a teacher.
I don’t know if the letter is yours.
They’ll go boating if it is fine tomorrow.
I’ll give it to her if she comes next week.
(2)if引導(dǎo)賓語從句時多數(shù)情況下可以與whether互換,但如果要突出“究竟是……還是不……”這層意思時,通常用whether,并在后面的加上“or not”,即一般要選擇whether構(gòu)成whether…or not的結(jié)構(gòu)。
e.g.Please find out whether the money is his or not.
Let me know whether you can come or not.
I want to know whether you can help me or not.
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