单词：optional
[化] 选购的
考试类型：[高考/四级/六级/考研/托福/IELTS/GRE]
optional的用法和样例：
例句
- The insurance cover is optional.保险范围可以随意选择。
- It is optional with you.那是你的自由。
- The goods are optional, but only one.这些物品是可以任选的, 但只能选一个。
- A 4-speed automatic transmission is optional.四段自动变速器是可自由选择的。
常见句型
- Chinese is our optional course to us students of science.中文是我们这些理科学生的选修科目。
- We have some optional subjects.我们有一些选修科目。
- The goods are optional, but only one.这些物品是可以任选的,但只能选一个。
- Our attendance at graduation is optional.毕业典礼可以自愿参加。
词汇搭配
- optional course〔subject〕选修科目
经典引文
Original writs are either optional or peremptory.
出自：W. Blackstone
单词：optional 相关文章
An Important tip! ''Tipping', gratuity or 'service' is handled very differently in the UK and America. It's important to get this right when you visit each place as it can affect whether the staff in bars, cafe, restaurant, hotels, hairdressers, and
英美文化
Ella: Its so exciting that youll be spending a month studying in McQuillanland this summer. When do you start packing? Marty: Ive already started. The organizers of the program gave me a list of things I need to bring. Ella: Thats really helpful. Mar
地道美语播客
Are American College Entrance Exams Unfair? 美国大学入学考试是不公平的? A growing number of American universities are dropping the entrance exam requirement. More than 800 universities now allow students to apply without an SAT or ACT te
2015年VOA慢速英语(八)月
Essential and Optional Things Ella: Its so exciting that youll be spending a month studying in McQuillanland this summer. When do you start packing? Marty: Ive already started. The organizers of the program gave me a list of things I need to bring. E
2012年ESL之日常生活