高中英语书面表达 句子衔接加连词
高考英语短文改错命题的一个重要方面就是考查连接手段，连词使用不当会造成上下句不衔接。英语中的词与词、句与句之间必须使用并列或从属连词。
●难点磁场
1.（★★★★★）It was about noon we arrived at the foot of the mountain.
78. ________ (NMET2002)
2.（★★★★）The food was expensive and the service was good.
84. ________ (NMET2002)
3.（★★★★★）It looks as if my parents treat me as a visitor and a guest.
84. ________ (NMET2001)
4.（★★★★★） felt that they helped me understand what the world works.
89. ________(NMET2001春季)
5.（★★★★）She was smiling but nodding at me. 92. ________(NMET2000)
●案例探究
1.If the book you want is out, you may ask for it to be called back for you, and whether you pay the cost of sending a post card, the librarian will write to you.
解析：此题为五星级题。whether改为If。此题考查if与whether作为连词的区别。此处为if引导的条件状语从句，表示“如果……”；如用whether，则表示“是否”，语意不通。
在下列情况下一般只用whether：引导介词后的宾语从句、主语从句、表语从句、同位语从句或在whether to do, whether…or not…中。