in the 1970s 世纪前要加the吗?

in the 1970s 世纪前要加the吗? 1900s和19th century区别in the late 1900s和in the late 19th century有什么区别?哪个是18世纪?`哪个是19世纪``?越详细越好``答的好给积分``` 在二十世纪90年代 是 in the 1990s.二十世纪翻成英语变成了19那么在二十一世纪 是 in the 21st century 还是 in the 20th century? early in the 18th century是译成早在18世纪 还是18世纪初期 英译中 in the 1950s in the 19th century in the 19th 和in the 1980's 用英文如何表示世纪用英文说世纪是有两种方法吗?例如,in the early 1900s 和 i the early 20th century是一样的吗?还有,第一种说法怎么读1900s? 20世纪初期可不可以说in the beginning of 20th centuryat the beginning of 20th century 请问in the 1960s and 1970s ‘是几世纪啊 在19世纪,翻译成英语in 19th century中间要加the吗? 二十世纪九十年代加不加the?in 1990s? the singer is staying in qingdao from the 5th to the 10th .then she 's _______shanghai 在十二世纪四十年代英文,例in the 1930s二十世纪三十年代 在二十世纪九十年代是In the 1990s 在二十世纪是IN 1900s 19世纪30年代用英语怎么说是in 1930s 还是in the 1930s 在20世纪60年代 英语是in 1960s还是in the 1960s in the 19th是什么意思 Write the letters in order to make a new word.(BOAYEVQIGHLCDATFJKMNPRS) 题在下面：1.the 1st,3rd,and the 9th letter:( )2.the 13th,3rd and the 4th letter:( )3.the 6th,5th,22nd and 4th letter:( )Tongue TwisterElizabeth's birthday is on the third Th