since 的意思 = 自从例子：How long is it since we visited your mother?（自从我们看望你母亲以来到现在有多长时间了?） so 的意思 = 所以 例子：so that i didn't finishi.所以我没有完成 although = 尽管,虽然例子：A car overtook me although I was going fast.(我虽然开得很快,还是被一辆车超过了) but = 但是,除此之外 例子 ：but i didn't eat it ( 但是我没吃） and = 和 例子：me and you ( 我和你） book and pencil ( 书和铅笔） since 的意思 = 自从例子：How long is it since we visited your mother?（自从我们看望你母亲以来到现在有多长时间了?） so 的意思 = 所以 例子：so that i didn't finishi.所以我没有完成 although = 尽管,虽然例子：A car overtook me although I was going fast.(我虽然开得很快,还是被一辆车超过了) but = 但是,除此之外 例子 ：but i didn't eat it ( 但是我没吃） and = 和 例子：me and you ( 我和你） book and pencil ( 书和铅笔）