(I)
He has been a student at Oxford University for the past year.
^^^^^^^^^^^^^^^^^
请问这里表达的是 "从过去到现在的1年" 吗?
(II)
During this time, he (a)has discovered common interests among his classmates.
^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^
(b)discovered
^^^^^^^^^^^^^
请问用(a)的话,表过去到现在的这段时间~ ;
(b)的话,表过去某段时间~
这样讲对吗?
(III)
When the teacher is talking in class, you can't stand up.
这个句子对吗?
我google了一下,大部份只看到的就是有关when/while用法,
或是when后面为省略主语而接的现在分词!
是否有其它用法、还请各位先进指教!
Thank you!! ^ ^