taught
Here teach is the past participle of the irregular verb teach. Follow the link to find out more and to listen to examples.
more information: teach
you're
Follow the link to avoid traps in spelling your and you're.
more information: your & you're
lit
Here lit is the past participle of the irregular verb light. Follow the link to find out more and to listen to examples.
more information: light
saw
Saw is the past tense of the irregular verb see. Follow the link to find out more and to listen to examples.
more information: see
put that down to
believe it is caused by
Example: I heard a noise last night, but I put it down to the wind.