Ielts speaking--how to improve your bandscore

When do we give examples and reasons?
We normally support our answer with examples to make it clearer and more
comprehensive; the more relevant it is, the better.
We always have to gives reasons every time we state an opinion or an argument
to sound more convincing and knowledgeable.
How do we give examples for part 1 questions?
First of all, we should not force it. One example for each question is more than
enough. After all, the answer to every part 1 question should be simple, as it is
mainly about personal matters.
Secondly, examples should be presented in a very natural way, and they should
not be obligatory. They might not be necessary in some cases.

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At the same time, they could also help you finish your presentation, especially
when you run out of ideas.