I've got to be somewhere at six.我6点要去个地方.为什么这么表达?要用完成时?用to b

I've got to be somewhere at six.我6点要去个地方.为什么这么表达?要用完成时?用to b I've got to be somewhere at six,语法如何理解?具体时间可以跟现在完成时态? I've really got to be going为什么用I've really got you've got to make it yourself!这里的用的是完成时吗?为什么要用完成时啊!顺便翻译一下 现在完成时的问题 I've got to work tomorrow.我明天要上班.请问这里为什么要用现在完成时. "I've got to go."为什么要用现在完成时态? i'm used to doing sth 和 i've got used to doing sth 都可以表达我习惯于 翻译:I've got to go now be-cause it's etting late.和I've got to 为什么这里要用不定式,这里的不定式做定语,I've got something to eat.（我有东西吃） I’ve got a million things to do and all of them have to be f let go.I've got places to be and people to see 关于现在时和过去式I'm afraid I've got to say goodbye to you now.为什么这里