attempt: stresses the initiation or beginning of an effort and suggests the strong possibility of failure: will ~ to photograph the rare bird.


try: stresses effort or experiment to test or prove something: ~ several times to find a solution. (experiment即表示试验也表示实验，这里表示尝试性，所以是试验)


endeavor: heightens the implications of exertion and difficulty and connotes a striving to fulfill a duty: ~ to find the survivors of the crash.


essay: implies difficulty but also suggests tentative trying or experimenting: had ~ dramatic roles on two earlier occasions.


strive: implies exertion against great difficulty and specifically suggests persistent effort: continue to ~ for a lasting peaceful solution.


attempt试图: 强调开始发起努力，并表示很可能失败，try尝试: 尝试性地去试验测试证明，endeavor努力: 强调费力(exertion)困难，常表示为了履行职责(fulfill a duty)，essay尝试: 正式用语，常表示尝试或试验的事情困难，strive奋斗: 努力克服巨大困难, 需长期努力。


记忆方法：1）首字母ATEES重新排成To EASE: 变得容易<==通过努力


          2）努力的意思是为实现目的而用力mean to make an effort to accomplish an end. (effort努力:泛指任何长度强度的用力，基础词不要解释)