英语中,什么情况下用has什么情况下用have答:have you finished your work?has she finished her work?在一般疑问句里回答直接用have/has yes,i have/ No ,i haven't Yes,she has/ No,she hasn't(因为这里have/has是助动词) have 是动词原形i have,we have,you have,they have,to have... has 是第三人称单数时用 he has,she has...