BE这里是一个系动词。
这是一个常见的句型,主语+系动词+表语
动词BE可以跟许多副词作表语。
eg:Is Helen in?
I have been out for a walk.
But i've got to be off now.
If he's not here,he's about somewhere.
BE这里是一个系动词。
这是一个常见的句型,主语+系动词+表语
动词BE可以跟许多副词作表语。
eg:Is Helen in?
I have been out for a walk.
But i've got to be off now.
If he's not here,he's about somewhere.