because

　　(1)從屬連詞,意為"因?yàn)?quot;,表示直接原因,用來(lái)回答why引導(dǎo)的疑問(wèn)句.

　　-Why was he late for school?他上學(xué)為什么遲到了?

　　-Because he got up late.因?yàn)樗�起床晚�?

　　-Why did the girl go to school on foot today?

　　那個(gè)女孩今天為什么步行去上學(xué)?

　　-Because her bike was broken.因?yàn)樗�的自行�?chē)壞了.

　　(2)漢語(yǔ)里"因?yàn)?hellip;所以…",在英語(yǔ)中卻不能把because 和so連用在一起,在句中只能用其中一個(gè).

　　I can't help you because I'm too busy today.

　　He was ill, so he didn't go to school yesterday.

　　(3) because可構(gòu)成詞組because of,意為"因?yàn)?由于",后面接名詞,名詞詞組或代詞等.

　　I had to stop the work because of the rain.

　　The girl fell off her bike because of her brother.

　　because / since / as / for

　　四個(gè)詞均表示原因,都是連詞,其中because,since as為從屬連詞,引導(dǎo)原因狀語(yǔ)從句,for為并列連詞,一般不引導(dǎo)狀語(yǔ)從句.四個(gè)詞的語(yǔ)氣由強(qiáng)至弱依次為because → since → as → for

　　(1)because意為"因?yàn)?quot;,表直接原因,回答why引導(dǎo)的原因狀語(yǔ),引導(dǎo)從句多用于主句之后.

　　(2)since意為"既然,由于",側(cè)重主句,從句表示已知的理由.

　　(3)as 意為"由于,鑒于"主句說(shuō)明結(jié)果,從句說(shuō)明原因.

　　(4)for意為"因?yàn)?由于",表示附加或推斷的理由.多用逗號(hào)隔開(kāi),一般不放在句首.

　　My father went to work on foot because his bike was broken. 我父親步行上班因?yàn)樗�的自行�?chē)壞了.

　　As it is raining now,let's go home.

　　既然天在下雨我們現(xiàn)在回家吧

　　Since he is new here,he looks strange.

　　由于他是新來(lái)的他看上去很陌生

　　Why do you like tigers? ______ they're cute.

　　A For B Since C Because D As

　　see

　　作動(dòng)詞意為"看見(jiàn)",強(qiáng)調(diào)看的結(jié)果. 還可表示"想一想,明白"之意

　　Can you see the book on the desk?

　　This is my book It isn't your book. Do you understand?

　　oh,I see.

　　look see watch

　　(1)look為不及物動(dòng)詞,后面接賓語(yǔ)時(shí)需加介詞at,強(qiáng)調(diào)看的動(dòng)作. look at = have a look at

　　Look at the blackboard, please.請(qǐng)看黑板.

　　(2)see強(qiáng)調(diào)看的結(jié)果,多與情態(tài)動(dòng)詞can連用.

　　Can you see the map on the wall?

　　你能看見(jiàn)墻上的地圖了嗎?

　　(3)watch意為"觀看,",表示注重某種動(dòng)作.

　　Our classmates are watching the football match on the playground. 我們的同學(xué)們正在操場(chǎng)上觀看足球比賽.

　　Let's _______ a film.

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