machine
magic
mail
mailman(mail carrier)
major
make
man
many
map
March
mark
market
married
marvelous
master
match
math
matter
may(might)
May
maybe
meal
mean
meat
media
medicine
medium
meet
meeting
menu
mile
milk
million
mind
minute
Miss
miss
mistake
modern
moment
Monday
money
monkey
month
moon
more
morning
most
mother(mom, mommy)
motorcycle
mountain
mouse
mouth
move
movie
Mr.
Mrs.
Ms.
much
museum
music
must
Air pollution is a major problem in big cities.
空氣污染是大都市的首要問題。
