试题出自试卷《中国科学院2020年考博英语真题》

【写作思路】
开头段：引出话题，给出不同人对成熟的定义，再明确个人观点，给出成熟的标准。
主体段：分点论证成熟的标志是自我否定和可靠等品质。
结尾段：总结全文，再次点明个人观点，同时尊重成熟的多样化定义。

【参考范文】

Almost everyone in his puberty has fantasized about growing up and being mature. As it is known to all, being mature does not equal to being old, because maturity is not measured by the number of years a person has lived. Instead, in my eyes, maturity is marked by the qualities of self-denial, and dependability.
To begin with, self-denial is a significant quality of a mature man. The word “self-denial” means restraining being strict with oneself. Sometimes, it is defined as self-discipline which has a bias passive meaning. In fact, self-denial is not making a lot of rules and regulations to layer upon layer to manacle oneself, but with the autonomic action to create an order for life. Besides, self-denial also means denying oneself and controlling one’s impulses. Faced with mistakes, a mature man should take measures to modify them and never behave impulsively.
Although self-denial is vital, probably a more important measure of maturity is dependability. When we praise a person who is dependable means he is worthy of reliance or trust. If one is committed to transmitting some secret documents to a company, he must be required dependable. Sometimes dependability refers to responsibility. Judging a person whether he is mature or not, responsibility is a key factor, for only the person with responsibility is worthy of being depended on.
In conclusion, if a man is equipped with the qualities of self-denial and dependability, I may reckon him as a mature human. Of course, there are diverse definitions of maturity, each individual can have his own answer.

【重点词汇】
fantasize /ˈfæntəsaɪz/ v. 幻想；想象 autonomic /ˌɔːtəˈnɒmɪk/ adj. 自主的
commit /kəˈmɪt/ v. 承诺 restrain /rɪˈstreɪn/ v. 抑制；克制
reckon /ˈrekən/ v. 认为；看作

【精选句型】
1. Instead, in my eyes, maturity is marked by the qualities of self-denial, and dependability.（给出中心观点，说明成熟的标志。）
相反，在我看来，成熟的标志是自我否定和可靠这两种品质。
2. In fact, self-denial is not making a lot of rules and regulations to layer upon layer to manacle oneself, but with the autonomic action to create an order for life.（品质1的支撑句）
事实上，自我否定不是制定很多条条框框来进行层层束缚，而是用自主的行动为生活创造秩序。
3. Although self-denial is vital, probably a more important measure of maturity is dependability.（品质2的中心句）
尽管自我否定十分重要，但成熟的一个更重要的衡量标准是可靠。
4. In conclusion, if a man is equipped with the qualities of self-denial and dependability, I may reckon him as a mature human.（总结句，总结个人观点：成熟的标志是自我否定和可靠这两种品质）
总之，如果一个人拥有自我否定和可靠的品质，我会认为他是一个成熟的人。

【全文翻译】

几乎人人都在青春期幻想过长大成熟的样子。众所周知，成熟并不等于变老，因为成熟不是用一个人活了多少年来衡量的。相反，在我看来，成熟的标志是自我否定和可靠这两种品质。
首先，自我否定是成熟的人的一个重要品质。“自我否定”这个词，就是克制自己，严格要求自己。有时，它被认为是自律，带有偏见的消极色彩。事实上，自我否定不是制定很多条条框框来进行层层束缚，而是用自主的行动为生活创造秩序。此外，自我否定也意味着否定自己，控制自己的冲动。面对错误，成熟的人应该采取措施来改正错误，而不是冲动行事。
尽管自我否定十分重要，但成熟的一个更重要的衡量标准是可靠。当我们称赞一个人是可靠的，意味着他值得信赖或信任。如果某人要向一家公司传输一些机密文件，他必须是可靠的。有时可靠性指的是责任。判断一个人是否成熟，责任感是一个关键因素，因为只有有责任感的人才值得依靠。
总之，如果一个人拥有自我否定和可靠的品质，我会认为他是一个成熟的人。当然，成熟可以有各种各样的定义，每个人都可以有自己的答案。