The question whether to go or stay is still undecided.

是去还是留下来的问题仍未决定。

youdao

The question whether to go or not is still undecided.

去不去的问题仍未决定。

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A Smith said he's still undecided to have surgery or not.

史密斯说，他依然还没决定是不是做外科手术。

youdao

A Smith said he's still undecided to have surgery or not.

史密斯说，他依然还没决定是不是做外科手术。

youdao