In _____ 1930’s,_____ World War Two broke out. 加the还是a,为什么? 还有 Many people agree that _____ knowledge of English is a must in ___ international trade today.
这句话意思是“第二次世界大战于二十世纪三十年代爆发.”,而是世纪三十年代,前面要加上the,即in the 1930's 或者in the 1930s. World War Two前面不用加任何冠词,但是,“二战”的另一种英语说法则要加the,因为,英语要在序数词前加the.The Second World War.(second是序数词,two是基数词.)