[正] I have known him from a child.
. I have known him since his childhood.
注:從過去某一時期到現(xiàn)在為止,英語要用現(xiàn)在完成時態(tài),介詞就用 since,但有時不說“迄”(till)也可以說“起”(from)的,即用“from + 普通名詞”代替“since + 抽象名詞”。但在 from 后也同樣可接抽象名詞,所以不說 He has been blind since childhood,而說 He has been blind from childhood. 也是一樣。