Yet в отрицательных предложениях.
Yet с present perfect.
Still в отрицательных предложениях.
Употребление Already.
Употребление Yet
Мы используем Yet в основном в отрицательных предложениях в значении "все еще не" (Eva hasn't started yet) и вопросительных в значении уже (Have you finished yet? ) . Yet, показывает, что говорящий ожидает что-то случиться. Yet, как правило, ставят в конце предложения:
It was 11 o'clock and Tom and Eva haven't come home yet.
We are hungry. Has supper been cooked yet?
Eva doesn't know who is going for picnic yet.
Yet с Present Perfect
Мы часто используем yet с Present Perfect (Вы закончили?). Сравните yet и still:
Jack and his friend lost their jobs three years ago and are still unemployed.
Jack and his friend lost their jobs three years ago and haven't found other jobs yet.
Was it still snowing at this time yesterday?
Has it started snowing yet?
Still в отрицательных предложениях
Still можно употреблять и в отрицательных предложениях (перед отрицанием not) :
Eva told me that they were to have been here half an hour ago and they still haven't come. Это похоже на "they haven't come yet" .
Not показывает более сильное чувство удивления или нетерпения. Сравните:
Eva and I wrote to our friends two weeks ago. They haven't replied yet. (but we expect them to reply very soon)
Eva and I wrote to our friends two weeks ago and they still haven't replied. (they should have replied before now)
Употребление Already
Мы используем already, что бы сказать, что что-то произошло раньше, чем ожидалось. Already обычно употребляют в середине предложения:
'When are Jack and his friend going to visit their friends?' 'They have already gone.' (= sooner than people expected)
Can we tell Marina and Yakim the information or do they already know?
Marina and Yakim have just come and we're already angry.
