v. 动词做，干；进行（活动）；从事（职业）
aux.（用于实义动词前构成否定句和疑问句）；（构成附加疑问句）；（代替实义动词以避免重复）
Why did you do that to your friend yesterday?
你昨天为什么做那样对你的朋友？
She asked me to do her a favor this weekend.
她让我这个周末帮她一个忙。
We need to do our homework before going out to play.
我们需要先做作业再出去玩。
Did you do the dishes after dinner last night?
你昨晚晚饭后洗碗了吗？
They plan to do a project together for the science fair.
他们计划一起做一个科学展览的项目。
I will do my best to help you with your problem.
我会尽力帮助你解决问题。
He decided to do something special for his birthday.
他决定为他的生日做一些特别的事情。
We should do more to protect the environment.
我们应该做更多来保护环境。
The teacher asked the students to do a presentation.
老师要求学生们做一个演示。
I forgot to do the laundry this morning.
我今天早上忘记洗衣服了。
do the dishes 洗碗
do a favor 帮忙
do business 做生意
do exercise 做运动
do research 做研究
do one's best 尽力
复数: dos;
第三人称单数: does;
过去式: did;
过去分词: done;
现在分词: doing;
