Conjugation

Sneak up on

s'approcher furtivement de

Regular verb, phrasal verb.

Conjugated like want, look, need, slow down, smart off, sort by

  • Phrasal verb: up on

    Only sneak changes; up on stays the same: sneaked up on, sneaked up on.

  • Two forms

    The tables show sneaked up on. In American speech you also hear snuck up on.

In speech, the helping verbs shorten: I’m, he’s, we’re, I’ve, I’ll, I’d.

Newbie

Enough to talk about now, the past, and your plans, and to give instructions.

  1. Present simple

    Habits, facts, and how things usually are. To say no or ask, add do or does: I don't sneak up on, he doesn't sneak up on.

    1. I / you / we / they sneak up on
    2. he / she / it sneaks up on

  2. Present continuous

    What is happening now, and plans already arranged: we’re leaving tomorrow.

    1. I am sneaking up on
    2. you / we / they are sneaking up on
    3. he / she / it is sneaking up on

  3. Past simple

    A finished action at a past time: yesterday, in 2020. To say no or ask, add did: I didn't sneak up on.

    1. I / you / he / she / it / we / they sneaked up on

  4. Future with going to

    Plans and intentions, and what you can see coming: it’s going to rain.

    1. I am going to sneak up on
    2. you / we / they are going to sneak up on
    3. he / she / it is going to sneak up on

  5. Imperative

    Orders, advice, and instructions. Let’s suggests doing it together. To say no: don't sneak up on.

    1. (you) sneak up on
    2. let's sneak up on
BeginnerExperiences, what you were doing, and the future with will.Present perfect · Past continuous · Future with willAlso show the Beginner tenses (3)

  1. Present perfect

    The past linked to now: experiences, news, and what started earlier and still goes on: I’ve lived here for two years.

    1. I / you / we / they have sneaked up on
    2. he / she / it has sneaked up on

  2. Past continuous

    An action in progress at a past moment, often interrupted: I was cooking when you called.

    1. I / he / she / it was sneaking up on
    2. you / we / they were sneaking up on

  3. Future with will

    Predictions, promises, offers, and decisions made now: I’ll help you.

    1. I / you / he / she / it / we / they will sneak up on
IntermediateHow long something has lasted, the past before the past, and what would happen.Present perfect continuous · Past perfect · Future continuous · Conditional · Conditional perfectAlso show the Intermediate tenses (5)

  1. Present perfect continuous

    An activity from the past until now, and how long it has lasted: I’ve been waiting for an hour.

    1. I / you / we / they have been sneaking up on
    2. he / she / it has been sneaking up on

  2. Past perfect

    The past before another past moment: when I arrived, the train had left.

    1. I / you / he / she / it / we / they had sneaked up on

  3. Future continuous

    An action in progress at a future moment: this time tomorrow, I’ll be flying.

    1. I / you / he / she / it / we / they will be sneaking up on

  4. Conditional

    What would happen in an imagined situation, and polite requests: if I had time, I would help.

    1. I / you / he / she / it / we / they would sneak up on

  5. Conditional perfect

    What would have happened, but did not: if I had known, I would have come.

    1. I / you / he / she / it / we / they would have sneaked up on
AdvancedWhat will have happened, and the longer continuous tenses.Past perfect continuous · Future perfect · Future perfect continuous · Conditional continuous · Conditional perfect continuousAlso show the Advanced tenses (5)

  1. Past perfect continuous

    An activity that had been going on until a past moment: she was tired because she had been running.

    1. I / you / he / she / it / we / they had been sneaking up on

  2. Future perfect

    An action finished before a future moment: by Friday, I’ll have finished.

    1. I / you / he / she / it / we / they will have sneaked up on

  3. Future perfect continuous

    How long an activity will have lasted at a future moment: in June, I’ll have been working here for a year.

    1. I / you / he / she / it / we / they will have been sneaking up on

  4. Conditional continuous

    An action that would be in progress in an imagined situation: if I were rich, I would be traveling now.

    1. I / you / he / she / it / we / they would be sneaking up on

  5. Conditional perfect continuous

    An activity that would have been going on in an imagined past: without the rain, we would have been playing outside.

    1. I / you / he / she / it / we / they would have been sneaking up on