“in summer vacations”和“during the summer vacation”为什么一个要加是,另一个不要?那两个短语有没有区别?为什么其中一个有"s",而另一个没有?如果知道,

“in summer vacations”和“during the summer vacation”为什么一个要加是,另一个不要?那两个短语有没有区别?为什么其中一个有s,而另一个没有?如果知道, on/in summer vacation, on/in summer holidays 这两个在暑假 用in 和on都对吗?另外,表示寒暑假holiday 可以加s ,可否说 summer vacations呢？还有用in还是on 是不是和假日的单复数有关呢？ 英语翻译1.I spent this summer vacation in quite a different way.I used to run about every day in previous summer vacations,but this summer vacation I simply could not afford to do so.I would soon be in the last year of my high-school education an The exam comes in July.When the exam finishes,the summer vacation begins.Boys and girls have two months to rest.The summer vacations are the best part of the year for most children.The weather is usually good.They can swim,go to summer camps or visit 帮我检查一下英语的语法错误Summer vacation wills to an end immediately,this is the last summer vacation in my life,also the most miraculous.The summer vacations have never been more meaningful than this one,has never been a holiday can be at summer 还是IN SUMMER 阅读理解 ⊙ o ⊙ ⊙ o ⊙ 根据短文内容填空The exam comes in July.When the exam finishes,the summer vacation begins.Boys and girls have two months to rest.The summer vacations are the best part of the year for most children.The weather 谁帮我看看这篇英语作文有没有什么错误,有错帮忙说下正确句子.How do I spend my summer vacationNow ,all student are spending their summer vacations.We are all very happy we have two months to relax .In these days .I ‘m not v 英语翻译cross-cultural solutions is the programme for students who want to volunteer abroad,offering programmes during summer and winter vacations.solutions在此是什么意思?offering programmes during summer and winter vacations.在本句中 是in summer 还是in the summer 英语短文改错高三76 Many Americas took their summer vacations in August.77President Obama with his family are among them.78 This past weekend the first family visited to the Florida Gulf coast.79 The president wants to support tourism in the a 短文改错、急!Many Americans took their summer vacations in August.President Obama with his family are among them .This past weekend the first family visited to the Florida Gulf coast.The president wants to support tourism in the area after the Most American familes like to have a vacation ____ summer.Summer is a good season____ vacations.It is very hot during the moths of Smile in this Summer it rain in summer? have summer in in the summer是什么意思 summer in the bowl