He is a good student except___he is sometimes careless.空处为什么填that_英语解答

He is a good student except___he is sometimes careless.空处为什么填that而不填which,except不是介词吗

人气：308 ℃　时间：2020-02-03 08:17:56

解答

except是介词,但此处需要一个宾语从句的引导词,而which是用来引导定语从句的.