"can" is a modal, so the following verb does not take "to" or "s"). The teacher wants to go home at 4 pm. The teacher can go home at 5 pm. Verbs of sensation (see, hear, taste, ...) don't normally have an -ing form for an action in progress. "Can" gives the meaning of an action in progress. The teacher talks to the students every day. [repeated action] The teacher talks to the students. [repeated action] The teacher is talking to the students. [action in progress in the present] The teacher hears students in the hallway between classes. [repeated action] The teacher is hearing students in the hallway. [<< incorrect] The teacher can hear students in the hallway. [action in progress in the present] The teacher hears students in the hallway. [ambiguous, meaning depends on context - repeated action or action in progress?] More information: English Grammar in Use by Murphy, Unit 26 "Can, could and (be) able to"

See will be correct

See

... can see...

Can والمصدر