You use the at the beginning of noun groups to refer to someone or something that you have already mentioned or identified.
Six of the 38 people were US citizens.
那38人中有6个是美国公民。
You use the at the beginning of a noun group when the first noun is followed by an 'of' phrase or a clause which identifies the person or thing.
There has been a slight increase in the consumption of meat.
肉类消费略微增加。
You use the in front of some nouns that refer to something in our general experience of the world.
It's always hard to speculate about the future.
推测未来总是很难。
You use the in front of nouns that refer to people, things, services, or institutions that are associated with everyday life.
The doctor's on his way.
医生正在路上。
You use the instead of a possessive determiner, especially when you are talking about a part of someone's body or a member of their family.
'How's the family?'—'Just fine, thank you.'
“家里人好吗?” “很好,谢谢。”
You use the in front of a singular noun when you want to make a general statement about things or people of that type.
An area in which the computer has made considerable strides in recent years is in playing chess.
近年来计算机取得重大进展的一个领域是国际象棋。
You use the with the name of a musical instrument when you are talking about someone's ability to play the instrument.
Did you play the piano as a child?
你小时候弹钢琴吗?
You use the with nationality adjectives and nouns to talk about the people who live in a country.
The Japanese, Americans, and even the French and Germans, judge economic policies by results.
日本人、美国人,甚至法国人和德国人,都是根据结果来评判经济政策的好坏。
You use the with words such as 'rich', 'poor', 'old', or 'unemployed' to refer to all people of a particular type.
Conditions for the poor in Los Angeles have not improved.
洛杉矶穷人的生活条件还未改善。
If you want to refer to a whole family or to a married couple, you can make their surname into a plural and use the in front of it.
The Taylors decided that they would employ an architect to do the work.
泰勒夫妇决定雇个建筑师来做这份工作。
You use the in front of an adjective when you are referring to a particular thing that is described by that adjective.
He knows he's wishing for the impossible.
他知道自己在企盼不可能的事。
You use the to indicate whether or not you have enough of the thing mentioned for a particular purpose.
She may not have the money to maintain or restore her property.
她也许没有足够的钱来维修或修复自己的房产。
You use the with some titles, place names, and other names.
the Seattle Times.
《西雅图时报》
the White House.
白宫。
The Great Gatsby.
《了不起的盖茨比》
You use the in front of numbers such as first, second, and third.
The meeting should take place on the fifth of May.
会议应于5月5日举行。
You use the in front of numbers when they refer to decades.
It's sometimes hard to imagine how bad things were in the thirties.
有的时候很难想象三十年代的情况有多糟。
You use the in front of superlative adjectives and adverbs.
Brisk daily walks are still the best exercise for young and old alike.
每天快步走对老老少少来说仍然是最好的锻炼方式。
You use the in front of each of two comparative adjectives or adverbs when you are describing how one amount or quality changes in relation to another.
The longer the therapy goes on, the more successful it will be.
治疗的时间越长,疗效就越好。
When you express rates, prices, and measurements, you can use the to say how many units apply to each of the items being measured.
cars that get more miles to the gallon.
每加仑汽油能多行驶几英里的汽车。
You use the to indicate that something or someone is the most famous, important, or best thing of its kind. In spoken English, you put more stress on it, and in written English, you often underline it or write it in capitals or italics.
The circus is the place to be this Saturday or Sunday.
马戏团是这周六或周日的最佳去处。