Words of time-quantity can be placed before or after a verb but the preverbal ones usually do not express span of duration except in some particular structures.
时量词语可以在动词前或后出现，除了在一些特殊结构外，动词前的时量词语一般不表示持续时段。
The verb quantifiers are those which measure the times and temporal duration which are an important part of quantifiers.
动量词是计量动作次数或延续时间的量词，是量词的重要组成部分。
When the verb takes an object, it is usually repeated, and the complement of duration is put after the repeated verb.
如果动词后面带有宾语，一般要重复动词，时量补语放在重复的动词后面。
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