many a 或 more than one 等限定词+单数可数名词，虽然表示复数意义“许多”“不止一个” ,但随后的动词通常用单数。
Isaac Asimov (Isaac Asimov) (1920-1992), is the American jews, childhood away from his native Russia went to the United S Youth majoring in biochemistry, since then he devoted himself to his writing, and become one of the world's most prolific writer, famous, one of the top science fiction writers of the century, have received awards from the representative of science fiction world highest honor Hugo and nebulae lifetime achievement prize in "master" With his name as the called "asimov's science magazine", is one of the biggest sci-fi literature popular magazine in America What a great god translation!