Saw 是see （看見(jiàn)）的過(guò)去式。
See 的過(guò)去時(shí)是saw, 過(guò)去分詞是seen.如:I see him. 我看見(jiàn)他了。這句話變成過(guò)去時(shí)，就是：I saw him.我（過(guò)去）看見(jiàn)他。直接將see 變?yōu)閟aw, 不需要助動(dòng)詞。I see him的現(xiàn)在完成時(shí)態(tài)是：I have seen him.I see him的過(guò)去完成時(shí)態(tài)是：I had seen him. (我在過(guò)去某個(gè)時(shí)間點(diǎn)之前已經(jīng)看見(jiàn)他了)I see him的被動(dòng)語(yǔ)態(tài)：He is seen by me.他(現(xiàn)在)被我看見(jiàn)了。I saw him 的被動(dòng)語(yǔ)態(tài)：He was seen by me.他(過(guò)去)被我看見(jiàn)了。I have seen him 變成被動(dòng)語(yǔ)態(tài)就是：He has been seen by me.他已經(jīng)被我看見(jiàn)了。I had seen him 的被動(dòng)語(yǔ)態(tài)就是：He had been seen by me. (他在過(guò)去某個(gè)時(shí)間點(diǎn)之前已經(jīng)被我看 見(jiàn)了)
