Learning vocabulary in context

Hi everybody!!!

As you all well know learning vocabulary is one of the most strenuous tasks Elementary students have to face. What's more, Advanced students come upon the same problem as they pile up set of new words with each lesson.

 I read somewhere that you have to come across a single word at least 7 times in different context in order to properly get its meaning. Do you know a good link to a dictionary or other kind of source where you can type a word and get its usage in different context (like extracts from literary sources, etc.)? My concern is not with the meaning of the word but with its usage.

Thank you!

Thank you very much Marius,

Google.com is one of the possible decisions but, most of the times, when you search through the address bar you get a lot of name domains containing the word you're searching for, and have nothing to do with the usage of the word (i.e. names of firms, advertisement products, etc.)

Answers.com is a very good web site, but still it doesn't attend to my needs.

Literaturepost.com doesn't have an address bar at all, so I didn't quite get what you mean. Please elaborate on that last one some more.

You see, what I want is extracts from newspapers, books, articles, etc. with the respective word I'm searching for.

Elisia