Conjugation

Happen upon

tomber sur

Regular verb, phrasal verb.

Conjugated like want, look, need, gear down, group together, hard-boil

  • Phrasal verb: upon

    Only happen changes; upon stays the same: happened upon, happened upon.

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 happen upon, he doesn't happen upon.

    1. I / you / we / they happen upon
    2. he / she / it happens upon

  2. Present continuous

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

    1. I am happening upon
    2. you / we / they are happening upon
    3. he / she / it is happening upon

  3. Past simple

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

    1. I / you / he / she / it / we / they happened upon

  4. Future with going to

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

    1. I am going to happen upon
    2. you / we / they are going to happen upon
    3. he / she / it is going to happen upon

  5. Imperative

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

    1. (you) happen upon
    2. let's happen upon
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 happened upon
    2. he / she / it has happened upon

  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 happening upon
    2. you / we / they were happening upon

  3. Future with will

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

    1. I / you / he / she / it / we / they will happen upon
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 happening upon
    2. he / she / it has been happening upon

  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 happened upon

  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 happening upon

  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 happen upon

  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 happened upon
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 happening upon

  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 happened upon

  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 happening upon

  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 happening upon

  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 happening upon