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Transcript of Biotechnology
have + -ed + for (time)
thousands of years.
(past) + when + ((past) passive)
when the price was lowered
when DNA was discovered
_________ is made up of ___________
(present perfect progressive) + for + time
have been changing
the genes of crops ...
for thousands of years
has been working
for two hours
, and he hasn't finished yet.
... like __________, ______________, and ____________.
resistant to ____________
poisonous to __________
In this way, ...
+ have had + (
) + (
) + (
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.
similar to _________ in size/ shape/ color/ attitude/ skill...
sucks up ______ from ______