already 与yet 的用法

（1）already 与yet 都有“已经”的意思，但already 常用于肯定句中，放在助动词have/has之后，过去分词之前；yet 常用于疑问句中，并用于句末。

I’ve already seen the film.

Have you seen the film yet?

（2）yet 用于否定句中，意为“还（没）；尚（未）”，通常位于句末。

I haven’t seen the film yet.

（3）already 与yet 的转换

在现在完成时态的句子中,含有already 的陈述句变为否定句或疑问句时，already 改为yet ，并放于句末。

I have already finished reading the book。

—-—-I haven’t finished reading the book yet.

—-——Have you finished reading the book yet？

I've already done it. 我已经完成了。

Have you eaten yet? 你吃饭了吗？

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选词填空

already / yet

1. I've _________ got his letter. It reached me ten minutes ago.

2. He hasn't finished his work __________.

3. Has your brother come ___________? No, he hasn't.

答案：1. already   2.yet   3. yet

选择already/yet填空。 

① He has not begun to work.

(2) - Have you had your lunch?

—No,not .

③I have finished my homework.

答案：①yet②yet③already

— Have you already made the decision to buy a computer? 

— No, not _______.

[  A   ]

A. yet   B. already   C. still   D. make

----Has she finished her work ____?　

----Yes, she has. She’s ____ finished it.

A yet; already　　 B already; yet　　 C just; already　 D already; just 

答案：A