We can’t get there on time unless we book the earliest flight

　　As long as --- 只要

　　We will succeed as long as we keep on trying.

　　As (so) far as --- 據……所知

　　As far as I know, he speaks English very well.

　　In case --- 假使, 如果

　　The plane cannot take off in case it rains.

　　Provided that 如果,有時省略 that

　　The plane will be in good condition provided that it is taken care of carefully.

　　On condition that --- 條件是…

　　He said that he would come to the meeting on condition that no one asked him to speak.

　　注:主從句的動作發生在將來時，則主句用將來時, 從句用一般現在時。

　　If he arrives tomorrow, I will be waiting for him at the airport.

　　3. 地點狀語從句

　　地點狀語從句只有兩個連詞: Where, wherever

　　Where --- 在……地方

　　Where there is a will, there is a way.

　　Wherever --- 無論哪里

　　Wherever you are, I will be right there waiting for you.

　　4. 原因狀語從句

　　because, as, since, now that, 和considering that, seeing that 這六個連詞都用于表示表示原因, 但在語氣上一個比一個弱.

　　Because --- 因為,通常從句放在主句后.

　　Mr Smith was very upset because he couldn’t find his luggage.

　　As --- 因為, 通常放在句首

　　As he is honest and modest, all his friends like him.

　　Since ---既然  因語氣較弱, 常譯為既然(眾所周知的原因)

　　Since everybody has come, we can set off.

　　Now that --- 既然

　　Now that you are here, you can join us.

　　considering that --- 顧及到

　　Considering that they are just beginners, they are doing quite a good job.

　　seeing that --- 由于

　　Seeing (that) quite a few people were absent, we decided to put the meeting off.

　　5. 結果狀語從句

　　引導結果狀語從句的連詞有：that, so that, so…that…

　　such…that  So… that --- 太……以至于 so 后面應用形容詞或副詞, 有時省略so只用that

　　Boeing 747 is so large that people like to call it jet bomb噴氣炸彈.

　　So that --- 因而，以便，為了 有時so 可以省去

　　Speak louder please so that the people at the back can hear you.

　　Such …that… ---太……以至于  用法與so…that相同，但such 后面應用名詞。

　　The foreign visitor was such a fast speaker that nobody could understand him.

　　6. 目的狀語從句

　　引導目的狀語從句的主要連詞有: that, so that, in order that, for fear that, lest

　　(So) that --- 以便, 從句中常常使用一些情態動詞，如：can, could, may, might, should等

　　Let’s take the front seats (so) that we may see more clearly.

　　in order that --- 為了, 與so that  相同從句中常常使用一些情態動詞，如：can, could, may, might, should等

　　School was closed early in order that the children might go home ahead of the storm.

　　for fear that --- 生怕; 為了防止(某事發生)

　　He took the name down for fear that he should forget it.

　　in case  --- 萬一

　　You should bring a dictionary in case you need it.

　　Lest --- 以防萬一

　　The man decided to tell his boss the fact lest he would be angry with him.

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