In the first paragraph, introduce the topic to be discussed. It won't take long, just three or four sentences. The first sentence introduces a topic (such as "a topic at present ... has aroused heated discussion." And other similar sentence patterns). The second and third sentences briefly state your views (for example, for or against). In my opinion, .../I think, .../and so on. ) The first paragraph ends.

The second paragraph describes the reasons why I agree with the above views. (First of all, .../On the one hand, .../First of all, .../and so on. (second, .../on the other hand, .../then, .../and so on. Finally, .../finally, .../and, .../and, .../and so on. )

The third paragraph, one or two sentences, summarizes and emphasizes your own views again. (In short, .../Generally speaking .../In short, .../etc. )

Take last year's CET-4 composition as an example to discuss whether disposable plastic bags should be used.

The first paragraph introduces the topics to be discussed. It is now a topic that everyone is generally discussing: whether disposable plastic bags should be used. Your opinion is ... (should/shouldn't) Well, the first paragraph is over.

In the second paragraph, state several reasons to support the above viewpoint (such as "should": cheap, easy to use, reusable, etc. ); If you think "should not", that is: it can't be decomposed, polluting the environment, which is not conducive to sustainable development; Unqualified plastic bags are toxic and harmful to human health. ) Anyway, it is enough to justify itself.

The third paragraph is briefly summarized in one or two sentences.

In fact, there is a routine, and it is very simple to be familiar with.