yet,just,already的相同点和不同点和用法

如题所述

1. already的用法:
(1)译作“已经”,通常用于完成时的肯定句中。如 I have already read the book. / Some visitors have come already. 位置:通常放在助动词后,过去分词前或句尾。
(2)有时already也可用于疑问句中,表示惊讶或明知故问等感情色彩。如 Has the little boy has already got home alone? (惊讶) / Has he forgotten everything already? (明知故问)
(3)在陈述客观事实的情况下,already也可用于一般现在时或一般过去时。如 He is/was already a middle school student.

2. yet的用法:
(1)译作“已经”,通常用于完成时疑问句中。如 Have you cleaned the room yet? 位置:句尾。
(2)译作“还”,通常用于完成时否定句中。如 I haven’t brushed my teeth yet. 位置:句尾。
(3)还可用作conj.,译作“然而”。如 Though she was very tired, yet she didn’t want to give up. 位置:并列句的后一个分句的句首。

3. just的用法:
(1)译作“刚刚”,通常用于完成时中。如 My father has just come back from work. 位置:放在助动词后,过去分词前。
区别:just和just now:just now译作“刚才”,用于一般过去时。位置:句尾。同义词组:a moment ago。如 He drank some water just now.
(2)还可用作adv. 译作“正好;仅仅”。如 It’ s just five o’clock. / Don’t be angry with him, he’s just a little child. 位置:助v.系v.情v.后,实义动词前。
(3)还可用作adj. 译作“正直的;公正的”。如 He’s a just man. / The result is very just.

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