这句话的语法不理解Did the students have any problems in their studies?为什么不用study 而用studies?

这句话的语法不理解Did the students have any problems in their studies?为什么不用study 而用studies? 1 Where did Ann get all the things on the list?2 Where did Ann put the baby?以上这两句话的语法对吗?如果不对, did you remember the news that i told you yesterday?这句话的结构对吗did you remember the news that i told you yesterday?这句话的语法对吗? 英语语法：many a person is playing basketball.这里面的语法知识是什么?极其不理解啊这句话没有错 有关各种语法的1._____their son away to college.the old couple got more room in the house A as B for C with请详细解释为什么2.when did it begin to snow?It started____the night.A during B by C in D at.C为什么不行3.male and female stu I did wear a black suit and a bow tie.这句话怎么翻译?里面的“did”是什么语法现象? 不理解下面这句话的的语法,看不懂意思These are clearly the future opportunities and areas growth in what is a total market worth an estimated 112 billion dollars. 英语的语法及结构分析（就1句话） The girl is always leaving things about. 我特别不理解这里的about. 这句话我不理解,Commitment is the attitude that just getting your feet wet just is not good enough.在书上看到的,但是理解不了.希望从语法、断句上给分析一下, 请帮助解决这句话的语法问题：I'd like to make sure of the time it leaves.I'd like to make sure of the time it leaves.我不理解“it leaves”中为什么要加“s”?请具体解释这句话的语法, 这句话语法有错吗Yes,I did learn something这句话语法有错吗 这句话是用的倒装吗But the best definition of existence ever saw did another philosopher who said:To be is to be in relations. “saw did”那一部分的语法结构是什么, She did nothing but to look at the photo.这句话对吗从意思到语法，时态可以忽略不计 as引导让步状语从句中现在分词放在句首后面的助动词怎么用?我是在语法书上看到这句话的觉得不理解，“如果动词或现在分词提前放在句首，谓语要补加助动词do/does /did,will等”然后它没 He did not find the time.这句话的意思 这是一道很老的题目了.但看了大家的解释还是不理解.where do you think __he__the tv set?where do you think __he__the TV set?A./,boughtB.has,boughtC.did,buyD.did,boughtDo you remember where you bought the TV set?这句话对吗?刚 请帮助解决这句话的语法问题：I'd like to make sure of the time it leaves.I'd like to make sure of the time it leaves.我想要确认班机时间没有改变.我不理解“it leaves”中为什么要加“s”?请具体解释这句话的 这句话的语法和意思有什么问题没有?Not until the pessimism inside makes our heart abounded with thorns and thistles did we realize the importance of hope and optimism.