Wherever possible, the illustrations are taken from literature.

只要有可能, 取自文学作品。

You must adduce a lot of examples to support your argument.

你必须引用许多来明你的观点。

It instances in a great author.

这是从一位大作家的作品里获得的。

A case might be made for the blackface minstrel show, vaudeville, or for the entertainments of some medicine shows, camivals, and riverboats as American folk drama.

滑稽说唱团演(由白人扮演黑人)、杂耍演，或一些娱乐性的药品巡回演、表演会与内河游艺船等，均可作为美国民间戏剧的。