习题：

　　1. The substance does not dissolve in water _______________________ (不管是否加热).
　　2. Not only ________________________ (他向我收费过高),but he didn’t do a good repair job either.
　　3. Your losses in trade this year are nothing ________________________ (与我的相比).
　　4. On average, it is said, visitors spend only _________________________ (一半的钱)in a day in Leeds as in London.
　　5. By contrast, America mothers were more likely ____________________________ (把孩子的成功归因于)natural talent.
　　

　　答案：
　　1. The substance does not dissolve in water whether it is heated or not (不管是否加热).
　　(本题考查对whether or not引导让步状语从句的掌握，当从句中的主语等同于主句中的主语，且从句中的结构是“主语+be”时，主语和谓语均可以省略)
　　2. Not only did he charge me too much/ did he overcharge me (他向我收费过高)，but he didn’t do a good repair job either.
　　(本题考查对部分倒装的掌握。当句首出现not only或only时，句子应采用部分倒装的结构，即只需把助动词或情态动词置于主语之前。由后半句中的didn’t可知，此处的助动词应使用过去式，“收费过高”也可用overcharge)
　　3. Your losses in trade this year are nothing compared with mine/ in comparison with mine (与我的相比).
　　(本题考查compared with或in comparison with作状语的用法，“与…相比”可以用compared with或in comparison with表示)
　　4. On average, it is said, visitors spend only half as much money (一半的钱)in a day in Leeds as in London.
　　(本题考查对倍数表达法的掌握。当用as…as表达倍数时，常用结构为“A+谓语+倍数+as+计量形容词原形+as+B”, “一半”用half 表示)
　　5. By contrast, America mothers were more likely to attribute their children’s success to (把孩子的成功归因于)natural talent.
　　(本题考查对be likely to…及attribute…用法的掌握。be likely to为固定用法，意为“可能”其后接原形动词)