~Topic sentence & controlling idea~

What the meaning of that??
oohh...All of my lovely friends,topic sentence(T.P) and controlling idea(C.I) is the steps to make our essay can
be complete. Definition of T.P is Every paragraph should have a topic sentence.This is the most important sentence because it expresses the main idea of the

paragraph. For example An important factor in learning a foreign language has to do with the

(REFRESH)

concept of intrinsic versus extrinsic motivation. In the T.S have complete sentence.complete sentence mean There are several things you need to

remember when writing topic sentences.  The

first is that topic sentences are always complete sentences. Controlling idea is including in the T.S.It mean

 A topic sentence contains the topic of the

paragraph and a controlling idea.  The

controlling idea limits the topic to something

very specific.For example Companies should develop more efficient forms of   energy such as solar heating panels.(C.I).I'm sorry Miss Zu..I have to copy from your slide because all  friends can more understand with this when they read then my explaination.sorryyy....don't blame me...hehehe...