1、Unit 3 Under the sea【问题导读】Read the text and try to tell if these sentences are True(T)orFalse(F)1Few of life in the ocean can be found in the first zone.()2Some light can reach the second zone.()FTThe earths oceans can reach depthsof up to 11,000metres.That is deep enough to cover Mt.Qomolangma！The
2、oceansare incredibly large and contain several different habitats.To make iteasier to describe the various parts of the oceans，marine scientistsusually divide the oceans into five zones.Most of the life in the ocean can be found in the first zone，which begins at the surface and goes down about 200 m
3、etres.Because there is sunlight at this level，plants are able to grow.Marine animals such as dolphins，sharks，sea turtles and sea lions，and of course a variety of fish，live in the sunlit part of the ocean.It is difficult to hide from other animals in this area.The second zone starts at 200 metres and
4、 goes down to aboutl,000 metres.Some sunlight can reach this level，but it is not enoughfor plants to grow.Because this zone is relatively dark，many of thecreatures that live here are able to make light with their body.Thelight from these animals makes the water look like a sky with movingstars in it
5、.The third zone of the ocean is dark.This place，about 3,000metres deep，may not seem a likely habitat，but there are morecreatures here than one might think.Most of the animals that live hereare black or red because of the lack of light.Below 4,000 metres，the temperature is near freezing and thereis n
6、o light at all.There is not much life to be found in this cold andunpleasant part of the ocean，but some small creatures still manageto survive here despite the high water pressure.The very deepest part of the ocean is found 4,000 metres furtherdown.At this depth，the water pressure is extremely high
7、and life isvery difficult for the few creatures that live here.【日积月累】1incredibly adv.难以置信地2marine adj.海的，海产的3sunlit adj.阳光照耀的【佳句欣赏】Most of the life in the ocean can be found in the first zone，which begins at the surface and goes down about 200 metres.第一层从海洋表面开始延伸到水下约200米，在这一层中能够找到大多数的海洋生物。关系代词which引导定语从句，其谓语动词分别为begins和goes；修饰先行词the first zone。谢谢观看！
