请帮我把这句话改成状语从句:(Having been trained)for weeks,she could drive the bus.
问题描述：
请帮我把这句话改成状语从句:(Having been trained)for weeks,she could drive the bus.
( ),she could drive the bus.
答
原因状语从句:because she has been trained for weeks.
条件状语从句:if she has been trained for weeks...
时间状语从句:after she has been trained for weeks...