At the start of this “Cancer Crusade,” researchers were already tackling some tough questions……问were already tackling 为什么要用过去进行时,还有加个already,为啥不用过去完成时或一般过去时;还有tackle不是阻止

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At the start of this “Cancer Crusade,” researchers were already tackling some tough questions……问were already tackling 为什么要用过去进行时,还有加个already,为啥不用过去完成时或一般过去时;还有tackle不是阻止

At the start of this “Cancer Crusade,” researchers were already tackling some tough questions……问were already tackling 为什么要用过去进行时,还有加个already,为啥不用过去完成时或一般过去时;还有tackle不是阻止
At the start of this “Cancer Crusade,” researchers were already tackling some tough questions……问were already tackling 为什么要用过去进行时,还有加个already,为啥不用过去完成时或一般过去时;还有tackle不是阻止的意思吗?怎么在这儿变解决了?

At the start of this “Cancer Crusade,” researchers were already tackling some tough questions……问were already tackling 为什么要用过去进行时,还有加个already,为啥不用过去完成时或一般过去时;还有tackle不是阻止
这应该怪咱们中国人学的语法太古板,already并没有要求一定要用于完成时,而在这个句子里强调的是at the start of this .是强调那个过程,所以用了过去进行时.tackle的意思很多,你只知道一个是不够的,其实阻止是个行动概念,解决是意识上的,应该是一样的,问题被解决了也就相当于被阻止了.同时tackle 还可以作为名词使用,比如渔具、滑轮等.遇到一个词应该查询字典,会发现很多更有趣的使用方法,英语学习就会变得更有意义.

人家用过去进行时表示已经解决了部分癌症问题， 并没有完全解决。进行时有一段时间里干什么的含义， 所以这里理解为在过去一段时间里已经解决了部分问题。 再有根据我们的常识， 各种癌症问题还没有完全的攻克。
tackle
n. 滑车；装备；用具；扭倒
vi. 扭倒；拦截抢球
vt. 处理；解决；抓住；固定；与…交涉...

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人家用过去进行时表示已经解决了部分癌症问题， 并没有完全解决。进行时有一段时间里干什么的含义， 所以这里理解为在过去一段时间里已经解决了部分问题。 再有根据我们的常识， 各种癌症问题还没有完全的攻克。
tackle
n. 滑车；装备；用具；扭倒
vi. 扭倒；拦截抢球
vt. 处理；解决；抓住；固定；与…交涉

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那个时候正在解决，还没有解决完

and the students 第一个单词后加among
Some college teachers think that students shouldn't have a boyfriend or a girlfriend in school because it will effect their study 中a boyfriend or a girlfriend 改为复数 还有...

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and the students 第一个单词后加among
Some college teachers think that students shouldn't have a boyfriend or a girlfriend in school because it will effect their study 中a boyfriend or a girlfriend 改为复数 还有effect改为affect
So it goes without saying that students shouldn't have a boyfriend or a girlfriend in school.这句话与上一句之间逻辑性不强，连接太突兀，之前应多做解释
However,the college students hold the idea that it isn't a good thing that the teachers are against the love between the students
这句话太繁琐
have a love
talk with his love 表达欠佳
it is different his friends and parents 这句错误
So there is no-doubt that the teachers are against the students in love. 其中no-doubt 用在这里意思不对
……
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This could be the start of something 是at the starting of 还是at the start of at the start of等于什么? The population,P(t),of China,† in billions,can be approximated byP(t) = 1.267(1.007)t,where t is the number of years since the start of 2000.According to this model,how fast was the population growing at the start of 2000 and at the start of 20 start at the end 是at the beginning of 还是at beginning of那at the start of or at start of 我记得老师好象说有一个无the啊 This week could be the start of something 用at the start of造句怎么造?急用 At the start of sth.同义句转换 at the start of与at the beginning of 的区别 英译中~幼儿园家长评语it's just the start of the semester,so kids at this stage are just new to it's just the start of the semester,so kids at this stage are just new to this language which is English.Give the time to learn and have them tea at the end of this term造句 look at the notice of this group, at the beginning of this love . at the beginning of this love start out at the end 英语翻译many students start their sudies academically unprepared for higher education.Poor basic and secondary education,combined with a lack of selection in the academic system,lies at the root of this problem.Yet rarely does an institution resp In UK,the children at the age of five must start school.