Macmillan English Grammar

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C

Outer core

Crust Mantle

Inner co re

at the bottom of

into the room

a toatatoutsideAtoin BBDCCD{rom{rom A

b

underoninatatAtoA BBD{romCDCunderj
c

totoonAAinon BBunderDDC{rom{romC k

d

atbelowoutsideonAAininto BBDDC{romoutsideC I

e

underunderatininAto BDDCCB tomA {rom
f

inontooninoutsideAAunderatBDDCCB n
g

belowunderinout ofAAonto BBDD{rom{romCC o
h

onAatto BDinC

Check that you have the correct answers to Exercise 3.

Translate the sentences into your own language.

Write a sentence wit h each phrase.

at the back of at the end of

in the midd/e of in front of

We know that the inside of the Earth has a metallic core (or central

part), a rocky mantle (or outer part), and a thin crust or surface.

As a result of high pressure a J3. the core, it is hotter

b.. ..the centre of the Earth than it is c the Sun. The

mantle is a layer of dense rock that lies d...... the surface and

above the liquid core.

The crust is the thinnest layer, being only about 35 km deep

e. .....continents, andf........ the ocean s it is even thinner

• only 5 km. Because of the crust's low density the material f10ats
  g.... .....the denser mant/e. The crust is divided into sections
  called tectonic plates. The Earth as we now know it was formed in
  four different stages. First of all, the most dense material (eg iron)
  sank h .. the centre of the planet. Lighter materials and
  gases stayed i.. the surface andj the atmosphere.
  The dense material formed the core of the Earth, and the lighter
  solids formed the crust. In the second stage, impacts from objects
  eg asteroids, comets, left the kind of crater marks we can still see
  k .... the Moon.
  During the third stage, lava came up I.. .....the Earth's crust
  and rain began to falim the sky.The first heavy rains
  formed ocean s and lakes.
  The fourth stage is still going on now as the surface changes.
  Mountains are rising n some areas. Large areas of solid
  material, tectonic plates, are moving just o...... the surface.

6 Choose the correct option, A, B, C or D, to complete the text.

2

1