一般认为，动词或动词性短语是形成整个句子所要表达事件内在时间结构的重要基础。
It is believed that time structure of a event, which forming a sentence, relies on verbs or verbal phrases.
动词的动名词形式和不定式，表达了事件发生前设想好的某种计划，也不保证事件一定会发生。
The gerund and infinitive form of a verb suggests that some sort of plan was made earlier before the event occurs and there is no assurance that the event will actually occur.
这些动词都表示确认事实、精确性或事件的真实性。
These verbs all mean to affirm the truth, accuracy, or genuineness of something.
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