he did very well in the test[besause] he worked hard all the time 括号里为什么填besause?
问题描述：
he did very well in the test[besause] he worked hard all the time 括号里为什么填besause?
整句的意思又是什么?
答
他测验成绩很不错因为他一直都很用功.
是原因状语从句,所以用because表示原因