6．We can¢t see air, ______,it does exist.

　　 A.and　　　　　 B.but　　　　　　 C.however　　　　 D.still

5．I have read one of his plays______a lot of his poems.

　　 A.but　　　　　 B.while　　　　　 C.as well as　　　 D.as well

4．This word may be used both as a noun_____as a verb.

　　 A.as well as　 B.nor　　　　　　 C.and　　　　　　 D.or

3．They may go to London, but they are not certain______.

　　 A.still　　　　 B.yet　　　　　　 C.already　　　　 D.however

2．Five minutes earlier,_____ we could have caught the last train.

　　 A.but　　　　　 B.and　　　　　　 C.so　　　　　　　 D.or

1．-The place isn¢t too bad, is it?

　　 -______ it¢s a bit too crowded.

　 　A.No, but　　　 B.Yes, though　　 C.No, because　　 D.Yes, yet

7．The day breaks______ the birds are singing.

　　 A.because　　 B.as　　　 C.since　　　 D.for

　 析：若选A、B、C，则The day breaks(天亮)的原因就是the birds are singing(鸟叫)，

　　　 显然这是不成理的，只有for引出的句子作为一种附加说明才成立。

介词、连词专练

6．______ you don¢t like him is none of my business.(上海高考题)

　　 A.What　　　 B.Who　　　 C.That　　　 D.Whether

　 析：从题干看，需要空白处填一词引出you don¢t like him这样一个事实，显然只有选

　　　 C.That合适。

5．Mother was worried because little Alice was ill, especially______ Father was

　　 away in France.(NMET)

　　 A.as　　　　　　 B.that　　　　　　 C.during　　　　 D.if

　 析：首先可排除C。因为during是介词，不能引导从句。that和if虽然可以引导从句，

　　　 但不能表述Mother was worried的原因。故只能选A。

4．Good technique in medicine means less pain and fewer deaths and,_____ ,it is

　　 our duty to master it.(上海高考题)

　　 A.altogether　　 B.therefore　　　 C.otherwise　　　 D.however

　 析：从上下文看，前后为因果关系，故应选B。