Having studied in university for 3 years,he knows the way very well.先翻译另外 开头改成To have studied可以么?

I love music so much that not a day passes when I do not regret ( )music in my youth.A.not to have studied B.not having studiedC.having not studied D.to have not studied说明理由 Having studied in university for 3 years,he knows the way very well.先翻译另外 开头改成To have studied可以么? Not having studied his lessons well,he failed in the exam.可否说Haven't studied his lessons well,是因为做状语所以要用ing吗? 一道高一英语单选题?为什么?The dangerous virus ______ in the following few weeks in the labratory can cause fatal diseases.A.studying B.studied C.to be studied D.having been studied In Un'altra Vita （01）Sir Arthur Conan Doyle (1859-1930) was born in Edinburgh and studied medicine at Edinburgh Un按首字母填空并翻译 谢谢Sir Arthur Conan Doyle (1859-1930) was born in Edinburgh and studied medicine at Edinburgh University. In 1897, wh studied studied A method for simultaneous determination of harmful trace elements in un-plasticized polyvinyl chloride (PVC-U) pipes by inductively coupled plasma atomic emission spectrometry (ICP-AES) was studied.Under the optimum condition,the method of simultaneo 不定式的完成时和完成进行时这两句话有什么区别?为什么用的时态不一样?哪一个是正确的?1 Robert is said to have studied abroad,but I don't know what country he studied in 2 He is said to be having been studied abroad In Un'altra Vita 拜谢! Is China in the UN? In un giorno qualunque歌词 Sat 语法Like former British prime minister MT,who studied chemistry in college,German chancellor AM was initially drawn to the sciences,(earning) a doctorate in physics before entering politics.个人觉得括号里应该改成having earning a doct how long have you studied in this He studied in Beijing university怎么翻译 一个英语问题：China has the largest number of overseas students in the world,with overChina has the largest number of overseas students in the world,with over 1.27 million ________aboard.A.to study B.studying C.studied D.having studied UN