欢迎来到想听!
问题描述:
Itwasthreemonthssincehecametoourschool改错
应改为Itisthreemonthssincehecametoourschool.或者是改为:Ithasbeenthreemonthssincehecametoourschool.(这是一个现在完成时的句子,句型结构为Itis/hasbeen+一段时间+since从句)