The Prefix Bi- : Grow Your Vocabulary with Simple English Videos
11,558 views ・ 2016-10-20
Please double-click on the English subtitles below to play the video.
00:05
What does the bi- in bicycle mean?
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Bi means two.
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A bicycle has two wheels.
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00:14
What do we call a plane that has two sets
of wings?
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00:19
A biplane
Next one.
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00:22
How do we describe someone that speaks two
languages?
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00:28
Hello.
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00:30
Bon jour.
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Bilingual.
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00:38
Next one.
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00:39
Bigamy.
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00:41
Bigamy is a crime.
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00:42
What crime is it?
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00:45
Bigamy is being married to two people at the
same time.
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And we call a person who commits bigamy a
bigamist.
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00:56
OK, what do you think binary means?
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01:01
It’s a system of numbers and it uses only
zeros and ones, like the numbers used in computers
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01:10
And next one, what do we call a creature with
two feet?
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01:18
Biped.
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01:22
As well as two, bi- can also mean twice, so
if you hold meetings bi-weekly, you hold them
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twice a week.
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01:31
What if you hold them twice a year?
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01:35
Do you hold them biannually or biennially?
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01:39
It’s biannually.
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Twice a year.
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A biennial event happens once every two years.
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01:48
Can you think of any more bi- words?
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Tell us in the comments.
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And click here for more prefixes and suffixes.
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