100的英语是hundred，读音 [ˈhʌndrəd]。
词组：
a hundred reasons，
100个原因；
a hundred euros，
100欧元；
about a hundred people，
大约100人。
例句：
One hundred (of the children) have already been placed with foster families.
有一百名（儿童）已经获安排领养。
There were just a hundred of them there.
他们那里只有一百人。
This vase is worth several hundred dollars.
这只花瓶值几百元。