这句是什么时态,has后有省略么
是一般现在时态。
have/has to 相当于情态动词must，意思是“必须，不得不”。不同的是must只有一种时态，而have/hasto可有好几种时态。例如：
I must go now。 我现在必须走了。
You must finish your homework before you wacth TV。
你必须完成作业才能看电视。
He has to do his homework。 他得做作业。(一般现在时)
I have to go now。 我现在得走了。(一般现在时)
I had to lie to her。 我不得不/只好向她撒了谎。（过去时）
I will ha...全部
是一般现在时态。
have/has to 相当于情态动词must，意思是“必须，不得不”。不同的是must只有一种时态，而have/hasto可有好几种时态。例如：
I must go now。
我现在必须走了。
You must finish your homework before you wacth TV。
你必须完成作业才能看电视。
He has to do his homework。
他得做作业。(一般现在时)
I have to go now。 我现在得走了。(一般现在时)
I had to lie to her。 我不得不/只好向她撒了谎。（过去时）
I will have to get up early tomorrow。
明天我必须早起。（将来时）
I have had to do that。 我不得不那样做了。（现在完成时）
注意：must的否定式是直接在其后加not；而have/hasto 要用don't和doesn't来帮忙，don't have to 或doesn't have to，意思是“不必”，相当于needn't。
变问句must直接提前，而have/hasto 要用do/does帮助。请看例句：
You mustn't take these books out of the library。
You don't have to go with me if you don't want to。
He doesn't have to go home now。
Must you go now?
Do you have to go now?
Does he have to do that?
。
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