1.look当名词时是可数名词,但是一般只用单数形式.
如：Have a look at this book.
看看这本书.
Have a look at this picture.
看看这张照片.
an angry look
愤怒的神情
A serious look passed over his face.
他脸上显出一副严肃的神色.
3.其复数形式looks有其特殊含义,意思是“外表,外貌”（=appearance）.
如：The famous actor kept his good looks even in old age.
"这位著名的演员即使年老了,他仍保持着好看的容貌."
Good looks are not as important as kindness.
好的容貌没有好的心肠重要.
