1.break(window/cups/legs/out/record), 

打破（窗户/杯子/腿/爆炸/记录） 

improve(English/school performance/basketball skill),

增进（英语/学校表现/篮球技术）

finish(homework/housework/meal/school/speaking),

结束（作业/家务/饭/学校/讲话）

leave(home/me/it to me),  find(keys/out/me),  

离开（家/我/把它留给我）,  发现（钥匙/发现/我）

yet已经,  already已经.

动词原形—过去式—过去分词: 

break—broke—broken, improve—improved—improved,  finish—finished—finished,  

leave—left—left,  find—found—found.

2.

Which: Which ……… have you ………?

Which toy have you picked?

Which car have you bought?

Which hamburger have you eaten?

Which movie have you watched?

Which tree have you planted?

What: What ……… have you ………?

What animals have you seen?

What food have you eaten?

What games have you played?

What subjects have you studied?

What music have you listened?

Who: Who have you ………?

Who have you seen?

Who have you met?

Who have you played with?

Who have you talked to?

Who have you hung out with?

Where and When: Where/When have you ………?

Where have you been?

Where have you gone?

When have you finished your homework?

When have you cleaned the house?

How: How often/much/many/long/far

How much money have you spent?

How many apples have you bought?

How far have you driven?

How long have you flown the airplane?

3.

Have you ………. yet?

你已经......?

Yes, I have already ………./No, I haven’t ……… yet.

是的，我已经....../不是的，我还没........

Have you found your keys yet?

Yes, I have already found them.

Have you improved your Spanish yet?

No, I haven’t improved it yet.

4.

Hi, what happened to your legs?

I have broken my legs.

嗨，你的腿怎么了？

我伤到了我的腿。

Lisa, I think your English is better than before.

Yes, I have improved my English.

丽莎，我觉得你的英语比以前好多了。

是的，我的英语提高了。

Mike, it’s time to do your homework now!

I have finished my homework.

迈克，现在该做作业了!

我已经完成作业了。

What time will your friend leave?

He has already left.

你的朋友什么时候走?

他已经走了。

Tom, everyone is looking for your keys!

Don’t worry, I have already found them.

汤姆，大家都在找你的钥匙!

别担心，我已经找到了。