1. My brother (to be) in hospital. He (to be) there for ten days.
My brother has being - такого времени нет, просто is in hospital. He has been there for ten days.
Мой брат находиться в больнице. Он находится там в течении 10 дней.
2. Jack (to teach) French. He (to be) a very experienced teacher. He (to teach)French for 15 years.
Jack teaches French. He is a very experienced teacher. He has ( 3л. ед. ч.) been teaching French for 15 years.
Джек учит французскому языку. Он очень опытный учитель. Он обучает французскому в течении 15 лет.
3. I (to know) Peter well. Since when (to know) him? I (to know) him since 1940.
I know Peter well. Since when have you known him? I have known him since 1940.
Я знаю Питера хорошо. Когда ты познакомился с ним? Я знаю его с 1940 года.