saw的原形是see。
see 看见
英 [si:]
美 [si]
第三人称单数： sees 现在分词： seeing 过去式： saw 过去分词： seen
例句：
Oh, I see what you're saying.
哦，我明白你的意思了。
I could see she was lonely.
我能看出她很寂寞。
You can't see colours at night
晚上看不见颜色。
I saw him yesterday
我昨天见到他了。
He had been to see a Semi-Final of the FA Cup
他看过一场足总杯半决赛。