you can only be sure of what you have have at present.这里的what用什么替代,在举些可以替代的句子例如：at last we came to the place that is called "Stone Froest'.

you can only be sure of what you have have at present.这里的what用什么替代,在举些可以替代的句子
例如：at last we came to the place that is called "Stone Froest'.

what ---------the things that.
the place that -----------what
再例如：
Tell me what you're looking for.
what -----the thing that
Tell me the thing that you are looking for.