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Biotechnology

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by

Scott Cook

on 21 August 2013

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Transcript of Biotechnology

Biotechnology
have + -ed + for (time)
People
have used
biotechnology
for
thousands of years.
I
have lived
in Seoul
for
two years.
(past) + when + ((past) passive)
Everyone
bought
the car
when the price was lowered
.
Biotechnology
advanced
very quickly
when DNA was discovered
in 1953.
_________ is made up of ___________
(present perfect progressive) + for + time
Farmers
have been changing
the genes of crops ...
for thousands of years
.
David
has been working

for two hours
, and he hasn't finished yet.
... like __________, ______________, and ____________.
resistant to ____________
poisonous to __________
In this way, ...
Likewise, ...
(noun)
+ have had + (
possessive pronoun
) + (
object
) + (
past participle
)
These
tomatoes
have had
their

genes

changed
.
This jacket has had its arms shortened.
I've had my house painted.
... know if + (gerund)
... know what + (verb phrase)
speed up / sped up
(a way of + (gerund))
Australia invented a way of removing the wool from sheep without cutting it off.
The teacher created a way of helping students find answers without simply telling them directly.
wrap around

peel off

similar to _________ in size/ shape/ color/ attitude/ skill...

sucks up ______ from ______
Full transcript