it's going to rain.怎么变成否定句

问题描述:

it's going to rain.怎么变成否定句

It isn't going to rain.

It is not going to rain.

原句是be going to will 是’s
It will not going to rain.

应该是It will not rain 吧。如果是直接在is后加not 感觉是有点奇怪,,,

直接在is后加not
it isn't going to rain