They all are good drivers.对吗

别扭
they are all good divers顺一点

语法上来讲没错。

可是They are all good drivers更合适。

all 和ARE换下位置
放句首 后接名词或介词
放句中 放行为动词前面 be动词后面
如 all the student are happy the student are all happy

应该是。

They're all good drivers.

因为all both really still等修饰词，
一般遵循 将情态动词 联系动词 置于助动词后 行为动词前

嘿。大概是这样吧。