Word
30
noun
三十
the cardinal number 30
- 1.
the cardinal number that is the product of ten and three
十和三的乘积的基数
十和三的乘积的基数
In use
The number 30 appears on the back of his jersey.
She circled 30 on the calendar to mark the deadline.
He counted to 30 before starting the race.
30 is [predicate]
作为基数名词，30被视为单数，谓语动词用单数形式。
30 is an even number.
30是一个偶数。
turn 30
表示年龄时，30前不加冠词，且turn后直接跟数字。
She turned 30 last week.
她上周满30岁了。
count to 30
The child can count to 30.
这个孩子能数到30。
Common mistakes
I am thrity years old.I am thirty years old.
拼写错误：'thirty'的正确拼写是't-h-i-r-t-y'，不是'thrity'。
I have thirty of apples.I have thirty apples.
数量词用法错误：当数字直接修饰可数名词时，不需要加'of'。例如，'thirty apples'是正确的，而'thirty of apples'是错误的结构。
Connections
Dictionary facts from ECDICT.