一些特殊連詞的用法

1、如何掌握一些特殊連詞的用法？玄武高級(jí)中學(xué)梅園校區(qū) 章磊 由于受母語句子結(jié)構(gòu)與邏輯關(guān)系的影響，學(xué)生常常把because和so連用、although和but連用。英語中because和so、although和but為什么不能連用？?jī)蓚€(gè)分句之間用because連接和用so連接、用although連接和用but連接在句法功能和語義上有什么差別？Unless在句子中該如何使用呢？ 連詞中的從屬連詞包括引導(dǎo)各種狀語從句（包括時(shí)間、地點(diǎn)、原因、目的、結(jié)果、條件、讓步狀語從句）的引導(dǎo)詞（如when, before, until, where, wherever, because, as, since, so

2、that, in order that, so that, if, unless, although等）。一、Because的用法 例句：Because he stayed up last night, he felt sleepy in class.because 的中文意思是因?yàn)椋脕磉B接兩個(gè)句子，because 既可以放在句首的位置，也可以放在后面。例：1. I stayed at home yesterday evening because it rained.= Because it rained, I stayed at home yesterday evening. 2. Tom

3、 went to bed very late last night because he had a lot of homework.= Because he had a lot of homework, Tom went to bed very late last night.Because句型中的常見錯(cuò)誤：1. 因?yàn)槲覜]有錢，所以我昨晚就沒買那本書了。2. 因?yàn)樗椿@球賽，所以我們就和他一起去。上述兩句例句，對(duì)我們來說，是百分百正確的句子，但在英文來說，卻是錯(cuò)誤的。 在英語中，若選擇用because,就不要用so;反之，若選擇用so,就不要用because。上述句子可以說成：1. Bec

4、ause I had no money, I didnt buy the book last night. 或 I had no money, so I didnt buy the book last night.2. Because he wants to go to the basketball game, we go with him. 或 He wants to go to the basketball game, so we go with him.2011莆田 Why do you like this TV program? _ its very interesting and e

5、xciting. A. Though B. Because C. So2011宜賓He didnt go to school yesterday _ he was ill. A. because B. because of C. if D. so 二、If 的用法 if是英語中出現(xiàn)頻率很高的連詞，并且它的用法也很多。學(xué)生感到很難掌握，為了讓同學(xué)們更多更好地了解其用法及其語法功能。現(xiàn)結(jié)合教學(xué)中遇到的情況，予以歸納。 1. if作為連詞，引導(dǎo)條件狀語從句，它表示的意思是“假如”“如果”等。在復(fù)合句中如果主句用將來時(shí)，則if引導(dǎo)的狀語從句用一般現(xiàn)在時(shí)。例如：If it doesnt rain, we

6、 will go to the park next Sunday.If you ask him，he will help you2. if作為連詞還可以引導(dǎo)賓語從句。引導(dǎo)賓語從句時(shí)和whether意思相同。例如：Lily asked if / whether she liked it. She asked if whether they had a cotton one.2013 沈陽You can save money_ you buy cheaper things. A. before B. unless C. if D. until2013大慶Nothing in the world i

7、s difficult _ you put your heart into it. A. unless B. though C. because D. if三、unless的用法 unless是從屬連詞，引導(dǎo)條件狀語從句，含有否定意義，相當(dāng)于if條件狀語從句的否定形式。所以u(píng)nless = if not。注意：unless引導(dǎo)的條件狀語從句和if條件狀語從句，與其它時(shí)間狀語從句一樣，用一般現(xiàn)在時(shí)代替將來時(shí)。 連詞unless意為“除非如果不”，“除了”，多引導(dǎo)一個(gè)否定意義的真實(shí)條件句，有時(shí)也可引導(dǎo)非真實(shí)條件旬。unless引導(dǎo)條件句時(shí)，主要用于下列情況。 1. 主句為肯定句。如：You wil

8、l miss the bus unless you hurry up Youll fail in chemistry again unless you work harder2. 主句為否定句。如：Unless you oil the motor regularlyit wont run smoothly You will never get anywhere unless you have set your goal3. unless在意義上相當(dāng)于if.not，因此在有些場(chǎng)合中unless與if.not可互換使用。Unless I am mistaken, Ive seen that man

9、 before=lf I am not mistaken, Ive seen that man before2013 濰坊May I go to Jinbao Park with you next Sunday?No, you cant, _ you have a ticket. I have only one ticket. A. if B. until C. unless D. as soon as四、although與though的區(qū)別和用法1. 用作連詞表示“雖然”，兩者大致同義，可換用，只是 although 比 though 更為正式：Though Although it was

10、raining，we went there. Though Although it was barely four oclock, the lights were already on. 2. 用作副詞although 一般不用作副詞，而 though 可用作副詞，且一般放在句末(不放在句首)，意為“可是”、“不過”：Its hard work; I enjoy it though. He is looking fit, though. You can count on him, though. 3. 用于習(xí)語在 as though(好像，仿佛)，even though(即使，縱然)等固定短語

11、中不能用 although：She closed her eyes as though she were tired. We felt as though we had witnessed the whole thing. 根據(jù)句子意思，選擇although或though填空。1. It was a hard job, he took it _. 2. Look! Some people are running the red lights. We should wait _ others are breaking the rule.althoughthough2011麗水1. 一I can

12、stay and help you _ you like 一So nice of youBillAuntil B. though Cif Dand2011青島2. You will achieve nothing _ you work hard.A. if B. unless C. when D. that 2011廣州2. _ they are very tired, they feel happy because theyve finally finished their project. A. So B. Although C. If D. But2013連云港 I wont watch basketball matches _James i