a cool rain was falling,mixed with snow为什么用mixed 雨难道是被混合吗被谁混合啊为什么不用mixing2 if law-breaker went unpunnished, the society will be in disorder为什么用went 不用made 或者came3. in order not to be disturbed, i spent three hours locked in my study为什么用locked 啊他还有的选择是locking ,to lock, being locked4if you go to xi'an, you will find palaces there more magnificent than commonly supposed为什么用supposed这里的主语不是you 吗应该是主动啊

1.混合有水.mix rain and snow.rain是被mix所以用mixed.
2.go unpunished是固定搭配.
这里go是系动词.
3.因为本来是lock myself in my study.所以应该是被动.
4.被设想的...被动.所以用supposed.

1.混合有水.所以是mixed.

1.雨被雪混合.这里的mixed with snow是定语从句,修饰rain,省略了that is,换个说法就明白了：A cool rain that/which is mixed with snow was falling.
2.首先这里用了虚拟语气,所以用go的过去式went.went在这里做系动词,表示持续发生的动作或状态,而came(come)和made(make)无此用法.

mixed是被动用法,mixing是主动用法,不可能雨主动去和雪混合
如果用made的话必须前面有be, go有时候有be的含义, 所以这里的go unpunnished类似于be punnished, come没有这种用法
locked表示被锁着, 强调状态, being locked强调动作
这里supposed修饰的是palaces,所以用被动. (如果你去西安,你会发现那儿的宫殿比通常认为的还要壮丽)