1、①表联合关系常用and,neither．．．nor,notonly．．．butalso等连词.如: Pip is not only a character , but he also tells the story of Great Expectations．
3、 ③表示转折和对比关系常用but,yet,while等连词或连接副瓠鲺闲剔词.如: He is a goodcomposer , but he has taught me nothing．(but表示转折) Some sports are usually done indoors , while others are done outdoors ．(while表对比) It is strange,(and)yet it is true．(表转折)
5、⑤ 表示条件或结果常用and,or等连词.在这类并列句中,and意为“(只要) 就”,or意为“否则”.如: Simply raise your hand , and a taxi appears in no time． Don‘t drive too fast , or you will have an accident．
