【正文】
15. How often 是疑問詞,意思是“ 多長時(shí)間一次,多久一次 ”,用于對頻率的提問 How often did you have breakfast ? How often did Danny have breakfast last week? Danny had breakfast once last week. When did Danny have breakfast ?. At about 7: 30 How often 是疑問詞,意思是 “多長時(shí)間一次,多久一次 ” ,用于對頻率的提問 How often did you have breakfast ? time 次數(shù) one time two times three times