have to 的时态疑问( Have you ever had to ) take a taxi home in the past? 这是现在完成时的时态吗?如果变为过去式提问是( Did you ever have to)?Doesn't/don't need to 等于 needn't

have been to是什么时态? have to,must时态的差别．时态上有什么区别have to不能和什么时态一起? when i have finished it.疑问这是是什么时态? have has been 是什么时态的havehas been to have的完成时态（have ） have to 的时态疑问( Have you ever had to ) take a taxi home in the past? 这是现在完成时的时态吗?如果变为过去式提问是( Did you ever have to)?Doesn't/don't need to 等于 needn't have got to能用于几种时态,它与have to的区别是什么 have to 用法have to 有无人称时态变化? have的过去时态是什么 Have you spoken to him?have ...过去分词 是现在完成时的疑问形式吗? to have been done是什么时态 have/has+been to是什么时态 have/has+been to是什么时态 I have been to shanghai 什么时态 We have to go to school to learn Chinese and English.时态,语法,这里have的意思 have to有没有被动语态表示“必须,不得不”的“ have to”有没有被动时态,请举例说明 I have always wanted to go to hill用的什么时态 have fun后跟动词的什么时态?