I have to go now!

我现在得走了！

I have to go now.

我现在得走了。

I have to go now bye.

我得走了，再见。

Joanna:I have to go now. Bye.

乔安娜：我现在得走了，再见。

I'm afraid I must break this conversation short , I have to go now.

对不起，我必须结束这次谈话，我现在得走啦。