單字庫

is

/ˈɪz/KK

練發音
助動詞
國小
難度 短、單義、常用
linking verb
third-person singular present form
變化形
第三人稱單數

ises

過去式

ised

過去分詞

ised

現在分詞

ising

1.
是;在;處於……狀態
極常用

用於第三人稱單數主詞後,作連綴動詞,連接主詞與身分、特徵、地點或狀態等補語。

用法:否定形通常是「is not」或縮寫形。疑問句可將此字移到主詞前面,例如「Is your brother at home?」

is a student
is at home
is ready
is important
is from Taiwan

My sister is a student.

我妹妹是一名學生。

The soup is too hot to drink now.

這湯現在太燙,還不能喝。

2.
正在……
極常用

與現在分詞連用,構成現在進行式,表示第三人稱單數主詞正在進行的動作,或目前暫時發生的情況。

用法:後面必須接動詞的現在分詞形式,不能直接接原形動詞。部分表示狀態的動詞通常不使用進行式。

is studying
is waiting
is raining
is cooking dinner
is getting better

He is studying for tomorrow's math test.

他正在準備明天的數學考試。

My mom is cooking noodles for dinner.

我媽媽正在煮麵當晚餐。

還有 1 個進階的意思(國小之後才會學到)
3.
被……;受到……
極常用

與過去分詞連用,構成現在式被動語態,表示第三人稱單數主詞是動作的接受者。

用法:後面接過去分詞。若要說明執行者,可在後面加上表示「由……」的片語。

is made in Taiwan
is closed
is invited
is known for
is required

The school is not open on Sunday morning.

學校在星期天早上沒有開。

Each student is asked to bring water.

每位學生都被要求帶水。

常見錯誤

He is agree with the rule.

He agrees with the rule.

The classroom is clean by the students every day.

The classroom is cleaned by the students every day.

She is study English after school.

She is studying English after school.

They is my classmates.

They are my classmates.

相關字詞
be 同源詞
are 同源詞
was 同源詞
學習提示

・這個字最常見的三種功能是連接身分或狀態、構成進行式,以及構成被動語態。判斷後面接的是形容詞、現在分詞還是過去分詞,有助於理解句意。

・縮寫形在日常口語與非正式書寫中很常見,但正式文件通常較常使用完整形式。

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