求翻译：我让学生学习一般现在时。首先，我让学生理解一般现在进的定义。然后讲一般现在时的用法。最后，我告诉学生：在一般现在时中，当主语是第三人称单数时，动词必须变为第三人称单数形式。是什么意思？

I let the students learn the present tense. First of all, I let the students understand the definition of general now into. Then talk about the present tense usage. Finally, I told the students: in the present tense when the subject is third person singular, the verb must become the third person sin

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I let the student study time the general present.First, I let the student understand the general present enters definition.Then says when general present usage.Finally, I tell the student: When general present, when the subject is the third person odd number, the verb must become the third person od

I allow students to learn the simple present tense. First of all, I let the students understand the definitions of General now. Then said use of the present tense. Finally, I told the students: in the present tense, when when the subject is third person singular, must be changed to third person sing

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