Macmillan English Grammar

f The astronomer William Herschel had asister, Caroline. Her research contributed to his discoveries.

g Paul McCartney has a daughter, Stella. Her career in fashion design has been very successful.

4 Rewrite each pair of sentences as one sentence, usingwhich. Make any necessary changes.

a The wmdcelIcomes from the Latincella.This means a smalI roam.

me,.word.cdt.c.oru.e,S ..Jroru..l~e, ..LaliV1..ce,lIa.WYl;c.~ ..I1Ae,tlV1.s.a.sl1Aall..rooru..

b AlI celIs have a membrane m skin. It covers the celI.

c Inside the celI is a substance called the cytaplasm. It contains

a number of chemicals.

d AlI cells contain DNA. This holds genetic infmmation.

Celi membrane

RNA DNA Cytoplasm

)

Nucleus

\

I'

e They also contain RNA. It includes the infmmation the celIs

need to build proteins.

f AlI celIs contain a nucleus. This controls the actions of the celI.

g Bacteria consist of only one celI. This can divide and make

other new bacteria.

h One of the most complex structures is the human body.

It contains over 100,000 billion cells.

5 Rewrite each pair of sentences as one sentence, containing the relative pronoun in capitals, or zero pronoun.

a Einstein is a scientist. I admire him.

...BiV1.Sle,iV1...is ..tl ..Sc.;e,V1.lisl ..w~o ..l ..adYlAjre, ...

b Shakespeare is a writer. I don 't understand him.

WHO

ZERO

c Marie Curie is a scientist. We are studying her. WHOM

d Newton is a physicist. We often discuss him. ZERO

e Homer is an ancient Greek writer. We study him in translation. WHO

f Leonardo is an artist. Everybody knows him. THAT

g lane Austen is an authar. Most people enjoy her. ZERO

G

h Beethoven is a compaser. I like him. THAT