a great while的用法和樣例：
例句
- We have talked the problem over for a long time.
這個(gè)問(wèn)題我們已商量許久了。 - Such notions have been around a lot longer than scary movies.
這種觀(guān)念在恐怖電影出現之前便已流傳許久。 - He had a long bout of illness last year.
他去年生了一場(chǎng)拖了很久的病。 - Fruit juices ferment if they are kept a long time.
果汁若是放置很久，就會(huì )發(fā)酵。
