重點(diǎn)講解：
1. a quarter of
四分之一；
eg. A quarter of all the people surveyed were don't-knows.
參加問卷調(diào)查的所有人中有四分之一沒有表示明確意見。
eg. They walked a quarter of a mile down the mountainside.
他們沿山坡下行了四分之一英里的路程。
2. be home to sb./sth.
是……的發(fā)源地，是……棲息地，是……的家園；
eg. Its neglected state might make it seem as though it were abandoned, but it is home to an old man and a jack-in-the-box.
不為人知的狀態(tài)似乎表明這座房子已經(jīng)被遺棄了，但是它卻是一位老者和一個(gè)玩偶的家。
eg. She said that the British Library is home to the whole of the English language memory since the English word began.
大英圖書館的藏書包羅萬象，囊括了自英語產(chǎn)生以來的所有英文書籍。
3. help to do sth.
有助于做某事；幫忙做某事；
eg. Attractive packaging can help to sell products.
精美的包裝有助于產(chǎn)品的銷售。
eg. The music will help to relax you.
音樂會(huì)使你感到輕松。