深浅外观
It is / was + 被强调部分 + that / who + 句子其余部分
who
that
去掉 It is / was 和 that / who:
It is / was
that / who
若剩余部分能组成一个语序通顺、成分完整的原句,则为强调句型;
若剩余部分无法组成完整句子,则为主语从句或其他从句。
例:It was in the park that we first met. $ o$ 还原为 We first met in the park.(成立,为强调句)