To write a process essay you have to use the present passive. Usually is/are with the past participle.
With some verbs the simple past & past participle are the same, but with other verbs there are differences, e.g. go, went & gone.
The process essays are similar to the procedure.
• We use same linking words in both essays e.g. first, second, next etc.
• The essay structure is the same in both essays, introduction (25 – 30 words), the body (about100 words) and the conclusion (25 – 30 words).
To write compare & contrast essays you should have.
1. A brief introduction about the two things you are going to compare and contrast (in 3 to 4 sentences).
2. In the second paragraph you have to write at least 3 similarities of these two things.
3. In the third paragraph you have to write at least 3 differences about them.
4. In the last paragraph which is the conclusion you have to write which one you prefer and why.