How to beat the PTE and IELTS exams?
What is supporting idea in PTE and IELTS essay?
After presenting your main idea in topic sentence you should argue about them and also, support them by a couple of sentences in the main body of PTE or IELTS essay. Basically, these sentences are called supporting ideas or supporting sentences or supporting points.
Actually, the topic sentence in paragraph is discussed, developed and explained by supporting ideas. In other words, you should support your claim in topic sentence by giving some examples, statistics, or other kinds of reasons.