Which tense is used with once?

If you substituted “once” with “since” the present perfect tense would be correct. The meaning of “Once” is more like “after” or “when” and thus describes a single action in the past that followed someone becoming a manager, which would require the second verb to also be in the past tense.

Is had mentioned correct?

I have mentioned refers to an action that occurred at some point in the past. I had mentioned refers to an action that occurred before another event in the past. I have mentioned to him several times that he should pay more attention while driving.

What is the correct tense of had?

The past perfect form of have is had had (had + past participle form of have). The past perfect tense is used when we are talking about the past and want to refer back to an earlier past time.

Which is correct had or have?

Remember that have is a helping verb, and had is the past participle. That’s why it’s correct to use the verb have two times in one sentence.

What part of speech is once?

adverb
Once is an adverb or conjunction.

Should I use past tense after once?

According to the Cambridge Dictionary, it is actually possible to do things in the future after having done some in the past (what?!?): We use once as a conjunction meaning ‘as soon as’ or ‘after’: Once I’ve picked Megan up, I’ll call you.

How do you say previously mentioned?

Other Ways to Say “As Mentioned Previously”

1. As I said before …
2. Like I said …
3. Like I said before …
4. Further to my previous comments …
5. As previously stated …
6. As I mentioned before …
7. As previously mentioned …
8. Before, I wrote …

Are mentioned or were mentioned?

Either is correct, but mentioned is more idiomatic. If you were talking about a past conversation you had with a person, rather than reading an article, then it would be clear that the mentioning took place in the past: Last week I talked to Jim, and he mentioned how human activities are causing global warming.

Were once or once were?

The meaning of “once was/were” is “as before”, “like before,” “as in the past”: in the past, but not now: This house once belonged to my grandfather. Computers are much cheaper nowadays than they once were.

How do we use at once?

At-once sentence example

1. I can’t be in two places at once .
2. He answered at once .
3. He looked at once panicked and guilty.
4. She recognized the female death-dealer at once .
5. I can make more than one kind at once .
6. He knew at once the object of her concern.