251.in the event that (=if) 假如，如果。in the event 结果，实际情况是(常与but连用)
252.in the event of (=in case of ) 万一，即使发生……时
253.except 除……以外;besides 除……以外还有……
254.(be) equivalent to (=equal in value， amount， meaning) 相等于，相当于
255.in essence (=in its/one‘s nature) 本质上
256.at all events (=in spite of everything， in any case) 不论怎样，无论如何
257.in any event (=whatever happens in the future) 无论如何，不管(将来)怎么样
258.except (=but) 除了。
259.except for (=apart from) 除……以外
260.(an) exception to ……的例外
261.with the exception of (=except， apart from) 除去……，除……以外
262.in excess of (=more than)超过
263.exchange……for以……交换
264.exclusive of (=not taking into account; without)不包括
265.in excuse of作为……的借口
266.exert……on……对……施加……
267.exert oneself to do sth.努力，使劲
268.come into existence (=begin to exist)开始存在;come into use开始使用;come into effect开始运转;come into fashion开始时新;come into action开始行动;come into power开始执政;come into sight进入视野;come into blossom开花;
269.(be) in existence存在come into existence出现
270.expect……of在……期望……