칼분석

○ 질문출처 : 

질문은 김정호 선생님 강의 및 교재만 가능합니다! (공무원/편입은 기출문제까지 가능)

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○ 질문내용 :

She is willing to do this, mainly because she doesn't know where she would want to transfer and cannot nail down what it specifically is that she wants from a different school.
빨간부분이 it is that 강조구문이 사용되었다고 하는데, 잘모르겠네요.  빨간부분 구문 분석 부탁드립니다.