1. ALREADY
已經(jīng)

Already is used to show that something has happened earlier. It is used in the mid-position of the sentence and is usually used with Present Perfect.
Already被用來表明早些時候發(fā)生了什么事。它用于句子的中間位置，通常與現(xiàn)在完成時連用。

In American English, it is also possible to use already with the Simple Past.
在美式英語中，也可以用一般過去時。

Already in a sentence:
Already用于一個句型中

other ways to say said
其他的說法

British English:
英式英語：

I have already done my homework./He has already washed the car.
我已經(jīng)做完作業(yè)了。/他已經(jīng)洗車了。

American English:
美式英語：

I already did my homework./He already washed the car.
我已經(jīng)做完作業(yè)了。/他已經(jīng)洗車了。

2. STILL
仍然

Still is used to show a continuous action, and is used in affirmative sentences. Still is used in the mid-position of the sentence. And is usually used with Present Continuous (Progressive).
Still用于表示連續(xù)動作，并用于肯定句。仍然用在句子的中間位置。通常與現(xiàn)在進行時連用。

Still in a sentence:
Still在一個句子中：

I am still doing my homework. /He is still washing his car.
我還在做作業(yè)。/他還在洗車。

Still requires the use of Progressive forms. Except for the verbs be, have and verbs of primary perception*. Or when you want to indicate a habitual situation (HABIT).
Still需要使用進行時。除了be，have和基本感官動詞?；蛘弋斈阆氡砻饕环N習慣性的情況（習慣）。

For example,
例如：

I still have the book that you gave me./I am still a strong guy./I can still hear< him./I still see her outside./ She still
我還有你給我的那本書。/我仍然是個強壯的人。/我仍然能聽到他。/我仍然看到她在外面。/她仍然去公園里慢跑。–習慣/他仍然在目標店購物。–習慣

NOTE: still is rarely used in negative sentences. It is usually replaced by ‘not…anymore’ or ‘no longer’
注意：在否定句中很少使用still。它通常被“不再……不再”或“不再”

For example,
例如：

I no longer< have the book that you gave me./I am not a strong guy anymore.
我不再有你給我的那本書了。/我不再是一個強壯的人了。

Verbs of primary perception: see, hear, taste, smell, listen, feel, watch.
基本感官動詞：看、聽、嘗、聞、聽、摸、看。

3. YET
仍然

words to use instead of said. Yet is used to talk about something that is expected to happen, but did not happen till this moment. Yet means at any time up to now. Yet is used in interrogative (questions) and negative sentences. Yet is usually used with Present Perfect. Yet is used in the end of the sentence.
其他說法：Yet這個詞是用來談論預期會發(fā)生的事情，但直到現(xiàn)在才發(fā)生。但意思是到現(xiàn)在為止的任何時候。但用于疑問句和否定句。但通常與現(xiàn)在完成時一起使用。但在句子的結(jié)尾使用。

Yet in a sentence:
Yet在一個句子中：

Have you finished your homework yet? – Interrogative/I haven’t washed my car yet. – Negative
你做完作業(yè)了嗎？–疑問/我還沒洗車。–否定

Yet is very rarely used in affirmative sentences, but when it is used, it implies a negative.
Yet在肯定句中很少使用，但當它被使用時，它意味著否定。

For example,
例如，

I have yet to read the ‘Harry Potter and the Goblet of Fire’ book= I have not read the ‘Harry Potter and the Goblet of Fire’ book yet, but I will probably read it soon.
我還沒有讀過《哈利波特與火焰杯》這本書，但我可能很快就會讀到。

4. JUST
僅僅

Just is used when we want to say that something happened a short time ago (very recently).
當我們想說不久前（最近）發(fā)生了什么事情時，就使用Just。

It is always used with Present Perfect or Past Perfect. It is used between the auxiliary verb (have/has) and past participle. Just can be used in affirmative and interrogative sentences.
它總是和現(xiàn)在完成或過去完成一起使用。它在輔助動詞（有或有）和過去分詞之間使用。只適用于肯定句和疑問句。

Just in a sentence:
Just在一個句子中：

I’ve just called my grandmother. (Present Perfect)/Have you just called your grandmother? (Present Perfect)/We had just< finished dinner. (Past Perfect)
我剛給我奶奶打過電話。你剛給你奶奶打過電話嗎？我們剛剛吃完飯。（過去完成）

NOTE: In American English just can be used with Simple Past.
注意：在美式英語中，只是可以用簡單的過去。

For example,
例子

I just saw him outside./I just called my grandmother.
我剛看見他在外面。/我剛打電話給我奶奶。

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