The grammar section English Grammar is filled with links to useful interactive exercises, which will hopefully help overcome any grammatical difficulty. Being understood as a foreign language user depends (partly) on sentences not being misunderstood because of grammatical errors. Being familiar with the grammar of the foreign language and applying those structural rules correctly, is essential when acquiring a foreign language. Grammar can be looked upon as the skeleton of the body of language: it keeps everything together and provides support for the framework of the body.