Tom ____(study) the electronics since he _____(leave) school two years ago.

问题描述:

Tom ____(study) the electronics since he _____(leave) school two years ago.

Tom has been studying the electronics since he left school two years ago
知识考察点:since 的用法 翻译:tom自从两年前毕业起一直在学习电子
保证答案正确

Tom has studied____(study) the electronics since he __left___(leave) school two years ago.

Tom __has studied__(study) the electronics since he __left___(leave) school two years ago.
since用现在完成时
two years ago用一般过去时