八年级英语上册第一单元知识点复习及测验知识要点1.How often多久(一次)你多久锻炼一次身体(汉译英)你妈妈多久购一次物(汉译英)【区别】How often和How many timesHow often② How many times 典型例题:1)Li Ming does his homework every day. (就划线部分提问)→2)The old man went to