to be
01
是, 在
used when naming, or giving description or information about people, things, or situations
Linking Verb: to be [adj] | to be sb/sth | to be to do sth
例子
Sarah is a talented artist.
莎拉是一位有才华的艺术家。
1.1
是, 由...组成
used for saying what something is made of
Linking Verb: to be particular constituent parts or material
例子
Is your table solid wood?
你的桌子是木制的吗？
1.2
是
to express equality between things
Linking Verb: to be sth
例子
Let y be the product of p and q.
设y 为 p和q的乘积。
1.3
花费, 是
used for talking about the cost of something
Linking Verb: to be a particular price
例子
The tomatoes are $ 2 per pound.
西红柿是每磅2美元。
1.4
是, 属于
used for indicating who owns something or who it is meant for
Linking Verb: to be for sb | to be someone's
例子
This book is for Tim.
这本书是给蒂姆的。
1.5
是, 代表
used for indicating how great the importance of something is to someone
Linking Verb: to be sth | to be [adj]
例子
Success is nothing without fulfillment in one's personal life.
成功若没有个人生活中的存在满足感就什么都不是。
02
是
to have an existence
Linking Verb: to be sb/sth
例子
There 's a rumor circulating about the new project.
有一个关于新项目的谣言在流传。
03
举行, 发生
to happen or take place
Intransitive: to be somewhere | to be point in time
例子
The annual festival is in July.
年度节日在七月举行。
04
是, 做
used for talking about time
Linking Verb: to be a specific time | to be [adj]
例子
It was early morning when the ceremony started.
仪式开始时是清晨。
05
是, 做
used for talking about the weather
Linking Verb: to be [adj]
例子
Why is it so foggy near the mountains?
为什么山附近会这么雾蒙蒙的？
06
去过
used in the perfect tenses to mean to go or visit
Intransitive: to be somewhere
例子
She has n't been to the museum since it reopened.
自从博物馆重新开放以来，她还没有去过。
6.1
已经, 去
used in the perfect tenses to mean to come or visit
Dialect
British
BritishIntransitive
例子
Has the cleaning service been to tidy up the house?
清洁服务来整理房子了吗？
07
是, 说
used to express what someone has said
例子
When I suggested a road trip, he was like, " That sounds amazing! "
当我建议公路旅行时，他说，“听起来太棒了！”
08
在
(auxiliary) used with the present participle form of a verb in forming progressive tenses
例子
We will be waiting for you at the airport.
我们将在机场等你。
8.1
被
(auxiliary) used with the past participle form of a verb when forming the passive voice
例子
The decision was made by the committee.
决定是由委员会做出的。
