we often help the others - we don't help the others - do we help the others?
tom reads english every morning - tom does not read english every morning - does tom read english every morning?
jack often studies Chinese - Jack does not study Chinese - Does Jack study Chinese?
she goes to park each Sunday - she does not go to park each Sunday - does she go to park each Sunday?
Dell often plays basketball - Dell does not play basketball - does Dell play basketball?