she must have an aspirin

she must have an aspirin She must take an aspirin. she must take an aspirin.句中的吃为什么不用eat 为什么 take an aspirin ,也可以是have some aspirin aspirin 算可数还是不可数? 来个会英语的he must take an aspirin .句子中的take是什么意思, I usually have aspirin改错 I usuallt have aspirin改错 aspirin可数还是不可数 为什么还有Take an aspirin? 改句:I usually have aspirin. she must have been forty.变反意疑问句! She must have gone out early ,( ) please---an aspirin 填take took totake takes那一个