в горните 2 поста има грешка в съгласуването на времената. когато има before, и по късното действие е в past simple, по ранното трябва да е в past perfect. ако не разбра какво казах просто препиши по един от следните варианти за всяко изречение:

1)She had loved him (had been in love with him) for a year, before they had their first date.
She loved him (was in love with him) for a year after they had had their first date. (макар че този вариант звучи малко алогично)

2)I had studied French for two years before I visited France.
I visited France after I had been studying French for 2 years.