ответьте на во какова разница в значении модальных глаголов can и be allowed to? 2) форма времени глагола can? 3) формы настоящего и времени глагола be allowed to? 4) в какой форме употребляется основной глагол (сказуемое) после модального заранее

1. я точно не знаю ответа,потому что оба эти модальных глагола выражают разрешение. Может вопрос не так задан?

2. сan в времени имеет форму could или was able to

3.Когда речь идет о событиях, происходящих в настоящем времени наш be меняется на am, are, is в зависимости от того, кто совершает действие.

Когда речь идет о действия происходили какое-то время назад), be превращается в was/were в зависимости от того, о ком идет речь.

4.Основной глагол следует после модального глагола в форме инфинитива.

"Nature provides free lunch, only if we control our appetites." This is a powerful sentence. Nature cannot provide for a community that is taking faster than it can produce. Example, a mother with nine children cannot make them all lunch at once. Some will be served before others, and they will have to be patient. If all the children want seconds, the mother will be tired and may not be able to provide the second meal. Statistics from Webecoist state that, "Oxygen-starved dead zones that cannot sustain life now cover an area approximately the size of Oregon. Dead zones are caused by excess nitrogen from farm fertilizers, factory and vehicle emissions, sewage and other pollution runoff." Humans causing these large, and increasing, dead zones will cause an extreme depletion in sea life. These animals are dying due to human error. 

1. The king asked the Queen if she was happy
2. The king asked a fairy if she was a good or a wicked one
3. The king asked how much bread had he baked that day
4. The king asked what he was doing there
5. The king asked if he had made clothes for any other kings
6. The king asked if I had won the war
7. The king asked if I would like to play chess (ты, скорее всего имел ввиду это слово в вопросе) with him
8. The king asked whether I can get more money
9. The king asked where was I from
10. The king asked whether I looked well after his roses