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八年級(jí)上冊英語主要知識(shí)點(diǎn)
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(shí)點(diǎn)吧，知識(shí)點(diǎn)是知識(shí)中的最小單位，最具體的內(nèi)容，有時(shí)候也叫“考點(diǎn)”。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(jí)上冊英語主要知識(shí)點(diǎn)，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(gè)并列的賓語從句時(shí)，第二個(gè)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(dòng)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(gè)、什么時(shí)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(duì)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(diǎn)：
(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(shí)意為“是否”，從句中該用什么時(shí)態(tài)就應(yīng)用什么時(shí)態(tài)。
if引導(dǎo)條件狀語從句時(shí)意為“假如”，從句中應(yīng)用一般現(xiàn)在時(shí)代替一般將來時(shí)。
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(shí)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(shí)，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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