19连词.ppt

Lecture 19: Conjunctions 连词是用来连接句子中的单词、短语及从句的虚词。在句子中不能单独作句子成分，一般不重读，在英语中连词的使用频率较高。 连词的分类 I. 并列连词 用来连接语法作用相同的或平行的词、短语或从句。 and, or, nor, but, yet, so, hence, therefore, for, as well as, either… or, neither… nor, and then, not only…but also, both… and 等等。 1．表并列或附加关系的连词 and, both…and…, while, not only…but also…, also, as well, as well as, and then, besides and 例句：A friend of mine came to see me yesterday and we had dinner together. He and his classmates are all busy working on their essays. Here is a pen and pencil for you. 注: (1) 表示配套的，和...一同的, 常见的有 bread and butter, a needle and thread, bacon and eggs, hide–and–seek(捉迷藏), give–and–take(互让, 妥协, 交换)等。 (2) 口语中用于come, go, try 等动词后表目的， 如： Go and get the door, will you? Come and see it. Try and get here before 10 a.m.. Wait and see. (3) 起补充说明和强调作用，如：You and only you can help me now. (4) 表示接连，重复，如: The Spring Festival draws nearer and nearer. (5) 表对比，如：John is always quiet and Tom is always noisy. (6) 表结果，如： Work hard, and you’ll succeed.. He was ill and took some medicine. both… and… 例句：Both Phil and Helen were involved in this case. We have offices both in Canada and in Japan. while 例句：While at college, he was very active in the student’s union. We waited while he had a meeting. not only … but also 例句：She speaks not only English but Japanese. We not only heard it but also saw it. He is not only a lecturer but also a writer. 注：not only… but … as well, not only…but…, 与not only…but also相似。 also 例句：Our monitor can sing and also dance. The overcoat is warm, also light. 注：and also 与之相似， 如：This machine is heavy, and also useless. as well 例句：We can do it as well. I gave him money and advice as well. as well as 例句：He has experience as well as knowledge. Hiking is good exercise as well as fun. and then 例句：You must ask Tom to the party, and then there’s Jerry – don’t forget him. I like doing part-time job, and then it helps me gain some experience. besides 例句：I don’t want to go; besides, I’m