(3)It became very light.

　　2.(1)He became very heavy.

　　(2)He had no weight and could float around like a feather.

　　(3)He was about one-sixth of his weight on the earth.

　　Task 2

　　1.(1)月球的引力不像地球的引力那么大。(2)副词;形容词;副词;连词

　　2.(1)当我试着向前迈步时,我发觉我被送出去很远,步子的跨度竟是地球上的两倍,因而,我摔倒了。(2)A+is+倍数+as+adj./adv.+as+B

　　Ⅱ.Writing

　　参考范文

　　I would be happy to accept the chance to travel to the moon.But if I visited the moon,perhaps I would face many problems.One of the problems I might have:How should I stop my food floating away.I would have to take all my food with me if I went to the moon.As far as we know,in the spaceship there is no gravity so the food would float around if it was solid.So I would make sure that it is specially made as liquid space food.I can put my liquid space food in a cub and then I would be able to eat it more easily.Perhaps I would use a straw to eat it.It would solve the problem.