核心问题
（1）Tom's parents do not allow Tom ____ swimming.
A. going B. to go C. go D. goes
(2) Sorry, we don't allow ____ in the lecture room.
A. to smoke B. smoke C. smoking D. to smoking
试题(1)要求用动词不定式(to go)，而试题(2)却要求用动名词(smoking)。这是为什么呢？
词典解答
应当记住 allow 的两个常见用法：
A. allow 要求用名词、代词或动名词来作它的宾语：
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We cannot allow such conduct. 我们不允许有这种行为。
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They do not allow smoking. 他们不允许吸烟。
B. allow + 宾语 + 带 to 的动词不定式：
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My parents allow me to stay out late at weekends. 我父母允许我周末晚点儿回家。
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He allowed me to enter. 他让我进去了。
练习题
请做下面的英语试题：
The growth of part-time and flexible working patterns, and of training and retraining schemes, ____ more women to take advantage of employment opportunities.
A. have allowed B. allow C. allowing D. allows(全国四级,00.6-43)