duration of time
time when expressions
的时候
miscellaneous
Spot the mistake
100
How many days are in three weeks?
三个星期有多少天？ （二十一天）
100
When do you leave?
你什么时候走？
100
Don't talk when eating.
吃饭的时候，不要说话。
100
It was last week that she came back.
她是上个星期回来的。
100
他们是明天来的。
This pattern is used to emphasize details of PAST events.
200
He worked in Korea for two years.
他在韩国工作过两年。
200
We might go to Shanghai next month.
下个星期我们可能会去上海。
200
In California, people can't talk on the phone when driving.
在CA, 人们开车的时候不可以打电话。
200
Do they often go overseas for vacation?
他们经常去国外度假吗？
200
今天又下雨又不热。
not 'parallel' components
300
Next week we will have three days off of school.
下个星期我们会放假三天。
300
I wear shorts everyday in the summer.
夏天我每天都穿短裤。
300
We can't go swimming when it is thundering.
打雷的时候我们不能游泳。 打雷的时候我们不可以游泳。
300
Have you seen this movie? Yes. How many times? Two times.
你看过这部电影吗？ 看过. 几次？ 两次。
300
我最喜欢寒假因为我会游泳。
会means can in the sense of 'know how to.' You should use 能 or 可以。
400
I waited for twenty minutes.
我等了二十分钟。
400
In July of last year we went to a lot of countries.
去年七月我们去了很多国家。
400
I often went ice skating with my dad when I was young.
我小时候常常跟爸爸滑冰。 我小时候经常和爸爸一起滑冰。
400
I would really like to go, but I can't. I have to do homework.
我很想去，可是我不能去。我要做作业。
400
冬天去北京应该戴大衣和毛衣。 When going to Beijing in the winter, you should take coats and sweaters.
带
500
He swam for five hours!
他游泳游了五个小时。
500
Bonus question: Free late homework pass It was in seventh grade that I began studying Chinese.
我是七年级开始学中文的。
500
When you answer the phone, you should say 'hello.'
接电话的时候，你应该说‘你好。’
500
Doctor Li looks like a teacher.
李医生看上去像老师。
500
他骑自行车骑的太快了。
得
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