sign-in

IPA/sˈaɪnˈɪn/
IPA/sˈaɪnˈɪn/

sign-in — phrasal verb

  • sign-inbase form
  • sign-ins3rd person singular
  • sign-ining-ing form
  • sign-inedpast simple

1. to put your name on a list or tell a receptionist you have arrived, as a way of

1.片語動詞不及物B1
釋義

to put your name on a list or tell a receptionist you have arrived, as a way of showing you are present at a workplace, meeting, or hotel

例句

All visitors must sign in at the front desk before entering the office building.

sign in + at + [physical location] for arrival

Nadia signed in at the hotel reception and took her room key from the clerk.

同義詞
  • check in

    more common at hotels, airports, or events where you receive a key or ticket

  • register

    more formal, used for official records like conferences or membership rolls

反義詞
  • sign out

    recording your departure from a building

文法句型

sign in + at/in + place

用法筆記

Commonly used with prepositions such as 'at' (the location) or 'in' (the register or book). Unlike 'log in', this sense refers to physically recording your presence, not accessing a computer system.

常見錯誤

I signed in my office at 9 AM.
I signed in at my office at 9 AM.
💡'sign in' is intransitive when recording your own arrival; you sign in AT a place, not sign in the place itself.

2. to put your name in a book next to the name of a person who has come to visit yo

2.片語動詞及物B2
釋義

to put your name in a book next to the name of a person who has come to visit you, so that he or she is allowed to enter the building where you work or stay

例句

The receptionist asked Chiara to sign her guest in at the security desk.

separable pattern: sign + [person] + in

You can sign in up to three visitors per day at the main entrance.

同義詞
  • register

    more formal, often used for official visitor logs

文法句型

sign + noun/pronoun + in

用法筆記

The object (the guest or visitor) can go between 'sign' and 'in': 'sign someone in'. With a pronoun, separation is required: 'sign me in', not 'sign in me'.

常見錯誤

Please sign in me at the front desk.
Please sign me in at the front desk.
💡With pronouns, the object must come between 'sign' and 'in', not after the full phrasal verb.

3. to type your username and password, or use another form of identification, so th

3.片語動詞不及物A2
釋義

to type your username and password, or use another form of identification, so that you can start using a website, app, or computer system that you are allowed to access

例句

Nora signed into her email account to check for new messages from her team.

sign in + into + account

You need to sign in with your student ID to access the online course materials.

同義詞
  • log in

    slightly more technical, preferred in computing and IT contexts

  • log on

    chiefly British English, used for accessing a network or system

反義詞
  • sign out

    ending a session on a website or system

  • log out

    common alternative for ending a session

文法句型

sign in + to/into + system

sign in + with + credentials

用法筆記

Often interchangeable with 'log in' for digital contexts, though 'sign in' is more common on websites and apps used by the general public. The opposite action is 'sign out' or 'log out'.

常見錯誤

Please sign in your password.
Please sign in with your password.
💡'sign in' is intransitive; you sign in WITH credentials, not sign in the credentials as an object.