yesterday i fixed native teacher's computer again.

-> Yesterday I fixed the native teacher’s computer again.

the teacher's micro office program was not working.

-> The teacher’s Microsoft office program wasn’t working.

and the computer operate very slow and sometime shouted out.

-> And the computer operates slowly and sometimes it shuts down.

so i thinked the computer is attacked by virus.

-> So I think the computer was attacked by a virus.

so i said "i recommeded to format the computer. and you have to format your USB memory."
-> So I said “I recommend formatting the computer and so as your USB memory.”

when i finished fixing the computer another teacher's computer internet didn't work.

-> When I finished fixing the computer another teacher's computer internet didn't work.

so i changed LAN cable

-> So I changed the LAN cable.

anyway, Computer is such a pain in the neck.

-> Anyway, computer is such a pain in the neck.

i want to take a rest.

-> I want to take a rest.