One tool I use a lot for language learning and teaching is Google. It is a quick way of checking many things and is one of the most useful tools available, although it is not designed as a language tool,...
I use this method quite often when I am writing in my PC.
If I find 2,123,434 web pages with the "expression" I am checking, I can be rather sure it is correct, otherwise ...
Using Google as a Language Tool 1 
Linear Mode
