我本应当早点来的 用英文怎么说

I should have come earlier!

I should have come earlier是正解
因为你没来早啊
所以句子必须要用虚拟语气

sorry..i should be earlier..

I'm sorry to late. I should be here earlier.

I ought to be here a little earlier.

I should have been here earlier！ 用过去完成时表示自己后悔当初的行为~