用a number of和the number of分别造两个句子.要中文!
问题描述：
用a number of和the number of分别造两个句子.
要中文!
答
Many people took part in 10,000-metre race, but only a number of them kept on running to the end. 许多人参加了10000米跑，但只有一些人坚持跑到底。 A number of my friends think I should take a holiday. 我的一些朋友认为我应该休假。 The number of students is about twenty. 学生人数大约是20人左右。
答
a number of…意思是“一些,若干”（= some）,后接可数名词复数或代词,谓语动词用复数形式.A number of my friends think I should take a holiday.我的一些朋友认为我应该休假.the number of…意思是“……的数字/数目”,介词of同其后名词构成介词短语,修饰the number.当它作主语时,谓语动词用单数.The number of students is about twenty.学生人数大约是20人左右.