Unit 30 去动物园
谚语与惯用语
a paper tiger 纸老虎
Will enemy make any changes? Or is it just a pa pe r tiger?
敌人会改变吗？还是只是个纸老虎？
as sly as a fox 像狐狸一般狡滑
Jack is as sly as a fox. He can think of a great idea in just a s.
杰克像狐狸一样狡猾，他可以一下子就想到一个好主意。
a bear hug 像熊一般的热情拥抱
Her boyfriend gave her an affectionate bear hug which alm breath away.
她的男朋友给她一个像熊一样的热情拥抱，让她几乎无法呼吸。
a dark horse 黑马
I didn't know Sue had written a book. She is a bit of a dark horse, isn't she?
我不知道苏已经写过一本书，她实在是一匹黑马，不是吗？
have butterflies in one's stomach胃里不舒服的感觉
She always has butterflies inher stomach before a test.
焉试前，她总是紧张得胃痛
