英语 这些天数后面为什么有的加s有的不加s

how many lessons does he have every weekday?这里的weekday
how many english lessons does he have every week? 这里的week
what lessons does he have on wednesdays?这里的wednesdays
how often does he do outdoor activities?这里的activities

how many lessons does he have every weekday?这里的weekday注意前面的every是每一个,所以是单数,不加s
how many english lessons does he have every week? 这里的week,和上面一样,注意前面的every是每一个
what lessons does he have on wednesdays?这里的wednesdays这里指的就是每星期三(很多很多的),不特指哪一个,所以可以加复数,如果不加复数就表示这一周星期三
how often does he do outdoor activities?outdoor activities指户外运动,如果没有特指哪一个,我们一般用复数
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第1个回答  2012-03-04
1,weekday这里表示工作日,与every联用表示“每个工作日”,every后面要跟单数,不加s。如 every day ,every one。“他每天有几节课?”
2。同上,every week即“每周”。“他每周有几节英语课?”
3。wednesday星期三,加s表示复数,在这里是泛指,表示通常情况。“他星期三都有什么课?”这句话也可以表示为“what lessons does he have every wednesday?"如果用单数wednesday,则表示特指,what lessons does he have on wednesday?意思是“他这周三有什么课?”
4.activities泛指所有的“活动”。outdoor activities室外活动
第2个回答  2012-03-04
every 表示每一个,所以不加s,其他的没特指本回答被提问者采纳
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