they should Они должны много работать - They should work a lot. owe Они должны мне денег - They owe me money.

Должны-Must

It depends on context. 1) Они должны мне кучу денег - They owe me a heaps of money. 2) Мы должны идти. - We must go or we have to go. 3) Они должны скоро прийти. - They ought to be here soon. 4) Автобус должен прибыть в пять часов. - The bus is due to arrive at five o'clock or The bus is sceduled to arrive at five o'clock. (Here the word "должны" used in a singular form - "должен".

Also it means: to have to do smth Вы должны идти. We have to go. Мы должны это сделать. We have to do it.

The root of this word (in Russian) coming from the "duty". But meanings may be other. "duty", "must", "need". 1. I have to go - Я должен идти. 2. I must to do it... Я должен сделать это Examples of other are right