Conjugation

Sneak up on

s'approcher furtivement de

Regular verb, phrasal verb.

  • 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