is

I 开头单词专八核心词

柯林斯词典

is /ɪz/

1. Is is the third person singular of the present tense of . Is is often added to other words and shortened to -'s. (be)的第三人稱單數現在時
2. the INTERNET DOMAIN NAME for Iceland 冰島

剑桥词典

The surname 'Smith' is very common in Britain .
This machine is easy to use.
Salt is a compound of sodium and chlorine .
This is your room - it is rather small , I'm afraid .
Grandfather gets quite confused sometimes, and doesn't even know what day it is.