Have one page "normal" while using twocolumn documentclass option

I'm using this configuration in my Latex document:

\documentclass[a4paper,landscape, twocolumn, 10pt]{article}

I'm using twocolumn because I want to have two columns on every page. But now I want to have one page (only one) with only one column (as if I didn't use the twocolumn option) and have the remaind开发者_运维知识库er of the document with two columns.

You can issue \onecolumn which will force a page break and start typesetting with the usual one column. When you are finished, issue \twocolumn, which will issue anothe page break and resume typesetting with two columns.

If you don't want page breaks, look at Frank Mittelbach's multicol package.

There's more Latex expertise at tex.stackexchange.com than here, these days.