Questions & Answers about אולי המפתח שלו בתיק שלה.
In Hebrew, simple present-tense sentences often leave out the verb to be.
So:
אולי המפתח שלו בתיק שלה.
literally looks like:
Maybe his key in her bag.
But the natural English meaning is:
Maybe his key is in her bag.
This is very normal in Hebrew. In past and future, Hebrew does use forms of to be, but in the present, it is usually omitted in sentences like this.
אולי means maybe or perhaps.
Putting it at the beginning is very common, just like English Maybe ....
So:
אולי המפתח שלו בתיק שלה.
= Maybe his key is in her bag.
You can sometimes move אולי around in Hebrew, but sentence-initial position is very natural and common.