Sir, <br/><br/>We breathe through nose. <br/><br/>We breathe with nose. <br/><br/>We breathe by nose. <br/><br/>Which one is correct? <br/><br/>He came by train. <br/><br/>HE came with train. <br/><br/>I am sometimes get confused ,where should I use by,with,through. <br/><br/>Thanks.