Exercise 2. Choose the correct alternative. 1 Did you already learn / Had you already learnt to ride a unicycle before you left / were leaving school? 2 The roads were / had been dangerous because it had snowed / snowed the night before. 3 She never visited / had never visited Australia before so she was feeling / had felt nervous. 4 They stopped / were stopping him from getting on the plane because he had lost / lost his boarding pass. 5 He wasn't / hadn't been tired because he'd had / he was having a good sleep the night before. 6 He found / was finding the geocache while he climbed / was climbing a tree.

Перевод задания: Выбери правильный вариант.

1. Had you already learnt to ride a unicycle before you left school? (Ты уже научился ездить на моноцикле до того, как окончил школу?) — Past Perfect обозначает действие, завершившееся до другого события в прошлом.
2. The roads had been dangerous because it had snowed the night before. (Дороги были опасными, потому что ночью до этого шёл снег.)
3. She had never visited Australia before, so she was feeling nervous. (Раньше она никогда не бывала в Австралии, поэтому нервничала.)
4. They stopped him from getting on the plane because he had lost his boarding pass. (Ему не дали сесть в самолёт, потому что он потерял посадочный талон.)
5. He hadn't been tired because he'd had a good sleep the night before. (Он не устал, потому что хорошо выспался накануне.)
6. He found the geocache while he was climbing a tree. (Он нашёл геокеш, пока взбирался на дерево.)

В каждом случае Past Perfect показывает более раннее событие, а Past Continuous — действие, которое происходило в тот момент.