■ bow and arrow

“弓箭”如果理解为一种武器的整体，作为主语时动词用单数。

• The bow and arrow was invented at that time.弓箭是那个时候发明的。

• everyone
• everyone 与 every one
• evidence
• evidence 与 proof
• evolution
• exaggerate
• except
• excuse me
• expect
• expense
• expensive
• experience
• expire
• expire 与 mature
• explain
• exposed to
• extension
• eye
• face
• face 与 confront
• fail to
• failure
• fairly
• fairly 与 rather
• falls