A useful introduction does two things
First, keep the core conflict of the prompt. Second, give the answer direction. Polished wording comes after that.
Many introductions only paraphrase the prompt and keep the position hidden. The response becomes unstable from the start.
Paraphrase is only part of the introduction.
The reader should see early whether you agree, disagree, partly agree, or discuss and judge.
The introduction should avoid narrowing or shifting the prompt.
First, keep the core conflict of the prompt. Second, give the answer direction. Polished wording comes after that.
If the introduction is unclear, write three versions: agree, partly agree, discuss and judge. Compare which one covers the prompt best.
These pages explain the Banfen Writing diagnostic and blocker-repair method, Task 1 overview, Task 2 development, and common score blockers.
Submit one Task 2 essay and see whether the introduction already limits Task Response.