Kiedy? gramatyka

[Visitor]

Kiedy sie uzywa:

am - was - have been
am able - was able - have been able
can - could - have been able


Nie chodzi mi regule czyli ktory to czas przeszly, terazniejszy itp tylko o proste wytlumaczenie dlaczego.
Dzieki
Danusia

[Visitor]

Ale dwie pierwsze formy zajęłyby tak z 10 intensywnych lekcji przy założ…eniu, ż…e uczeń jest lotny i pojętny, ale zaczyna od zera (jak ty, skoro o to pytasz). Trzecią formę moż…na zgrubsza objaśnić podczas kolejnych lekcji, chociaż… na tę formę jescze (bezpośrednio po tamtych 10) nie czas. Proste wytłumaczenie dlaczego nie ma sensu, jesli mówimy o kilku rzeczach naraz (trzy czasy i czasownik modalny).

[Visitor]

http://www.angielski.edu.pl/190303_gram ... AST+SIMPLE
http://www.angielski.edu.pl/150303_gram ... ENT+SIMPLE
http://www.angielski.edu.pl/030303_gram ... NT+PERFECT

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