你好,老师!
The Brown often have their windown cleaned by a young cleaner.
have sth done 是一个词组,表示让/叫/使/请别人做某事,这个词组已经包含了做事的人“别人”还可以另外加by a young cleaner?看似好像有语法错误?
Conformist behaviour would change over time if the reference group on whose behaviour households base their own decisions changes.官方翻译是:如果各个家庭对自己的行为作出决策时参照的群体发生了变化,遵从性的行为就会随时间而改变。if从句的部分不太...