When he saw the cat, he was very surprised 同义句 he—— —— ——— —— the cat
问题描述：
When he saw the cat, he was very surprised 同义句 he—— —— ——— —— the cat
答
He was verysuprised when seeing the cat.这是一个固定的句型，即he。。。。when doing 翻译为 “一。。。。。就。。。。”这个句型很重要，考试经常考
答
He was surprised because he saw the cat
答
He was suprised when seeing the car.