not be as strong a pull as the earth's.

　　当我们更接近月球时，就会感到月球的引力在拉我们。但是，月球的引力不像地球的引力那么大。

　　[句型点拨]as ＋adj.＋a/an ＋n.＋ as意为"像......一样的......"。

　　[佳句赏析]Please give them encouragement to live as rich and full a life as you do.

　　请给予他们鼓励，让他们和你们一样过着丰富多彩又充实的生活。

　　2．[教材原句]But when I tried to step forward, I found I was carried twice as far as on the earth and fell over.

　　当我试着向前迈步的时候，我发觉我被送出去很远，步子的跨度竟是在地球上的两倍，因而我摔倒了。

　　[句型点拨]twice as far as ...属于"倍数＋as＋形容词/副词原级＋as ..."结构，是一种倍数的表示方法。

　　[佳句赏析]Our new library is four times as large as the old one.

　　 新图书馆是旧图书馆的4倍大。

　　3．[教材原句]"Oh dear，" I cried, "walking does need a bit of practice now that gravity has changed."

　　"天哪，"我大声说，"既然重力改变了，看来走路也的确需要练一练了。"

　　[句型点拨]从属连词now that意为"既然"，引导让步状语从句。

　　[佳句赏析]Now that everybody is here, we can begin the meeting.

　　既然大家都到齐了，我们可以开始开会了。

　　[课 文 对 译]

　　A VISIT TO THE MOON

　　Last month I was lucky enough to have a chance to make a trip into space with my friend Li Yanping, an astronomer. We visited the moon in our spaceship!

Before we left, Li Yanping explained to me that the force of gravity would change three times on our journey and that the first change would be the most powerful. Then we were off. As the rocket rose into the air, we were pushed back into our seats because we were trying to escape the pull of the earth's gravity. It was so hard that we could not say anything to each other. Gradually the weight lessened and I was able to talk to him. "Why is the spaceship not falling back to the earth? On the earth if I fall from a tree I will fall to the ground." I asked. "We are too far from the earth now to feel its pull，" he explained, "so we feel as if there is no gravity at all. When we get closer to the moon, we shall feel its gravity pulling us, but it will not be as strong a pull as the