1．[教材原句]They may be many kilometres long with plastic balls to keep them floating on the water, and weights to hold them down on the seabed.

　　它们或许有数千米长，且带有塑料球以让它们一直漂在水面上，也带有一些重物以让它们垂到海床上。

　　[句型点拨]句中使用了"keep＋宾语＋宾补"结构，keep意为"使......处于某种状态"。

　　[佳句赏析]In our daily life, we must keep ourselves away from danger.

　　日常生活中，我们必须使自己远离危险。

　　2．[教材原句]I'm sitting in the warm night air with a cold drink in my hand and reflecting on the day - a day of pure magic!

　　我坐在温暖的夜空下，手里拿着一瓶冷饮，回忆着当天的事情--这是神奇的一天！

　　[句型点拨]with复合结构，在此处作状语。

　　[佳句赏析] (2014·天津高考写作)With the climate changing, you should prepare enough clothes.

　　由于气候变化，你应该准备足够的衣服。

　　3．[教材原句]Then there were two grey reef sharks, each about one and a half metres long, which suddenly appeared from behind some coral.

　　然后，还有两条灰色的珊瑚鲨，每条大约有1.5米长，突然从珊瑚礁后边游了出来。

　　[句型点拨]独立主格结构。

　　[佳句赏析]Class over, the students went out of the class room.

　　课堂结束了，学生们走出了教室。

　　4．[教材原句]The water was quite shallow but where the reef ended, there was a steep drop to the sandy ocean floor.

　　海水是浅的，但是到了珊瑚礁的尽头，就有一个陡坡，一直下降到满是沙子的海底。

　　[句型点拨]句型where ...，there be ...表示"在有......的地方，就有......"。

　　[佳句赏析]Where there is a will, there is a way.

　　有志者事竟成。

　　A NEW DIMENSION OF LIFE

　　19th January

I'm sitting in the warm night air with a cold drink in my hand and reflecting on the day - a day of pure magic! I went snorkelling on the reef offshore this morning and it was the most fantastic thing I have ever done. Seeing such extraordinary beauty, I think every cell in my body