问
How close parents are to their children ____ a strong influence on the character of the children. A. have B. has C. having D. to have
我选了A,对吗?
答
不管是由 that 引导的主语从句,还是由 wh-词引导的主语从句,其谓语动词一律使用单数,故上题应当选 B。类例:
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That we shall be late is certain. 我们将要迟到,这是确定无疑的。
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Whether we'll go depends on the weather. 我们是否去,要看天气而定。
练习
How and why ____ such an experiment is unknown to all.
subject clause
When and where to go for the on-salary holiday ____ yet.