Academic Language #2 - Ownership

In one of my earlier posts I remarked about my difficulty, as a member of the proletariat, coming to terms with academic language. Since then I have experienced significant exposure to this elitist form of communication during the researches for my essay.

One thing that now concerns me is, how do I know when this new found academic vocabulary becomes mine? I seem to recall someone in a CS lecture warning us not to use our own language in our essay. Because we did not know enough! I have to say I find myself constantly concerned that my writing simply paraphrases the words of others!