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is

I 開頭單詞專八核心詞

柯林斯詞典

is /?z/

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(shù)現(xiàn)在時(shí)
2. the INTERNET DOMAIN NAME for Iceland 冰島

劍橋詞典

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.