sen vs send

Short answer: send = present/base form; sent = past simple and past participle. Quick test: use did → send; use have/has/had or a past-time marker → sent.

Below: a tight rule, quick checks, many wrong→right pairs (work, school, casual), rewrite templates, spacing/hyphenation notes, a memory trick, and common confusions.

Quick answer

Use send for present and future actions (I send, I will send). Use sent for completed past actions and after have/has/had (I sent, I have sent).

Requests or commands: use send (Please send the form).
Completed actions or perfect tenses: use sent (I sent it; I have sent it).
Past-simple questions use did + base verb: Did you send? not Did you sent?

Core explanation: the tense rule and quick checks

send = base form (present or infinitive). sent = past simple and past participle.

Auxiliary test: if the sentence uses did → use send. If it uses have/has/had → use sent. If the sentence mentions a past time (yesterday, last week), choose sent unless context changes the meaning.

Past-time marker? likely sent: "I sent the file yesterday."
Promise or future? use send: "I'll send the file tomorrow."
Question with did? use base: "Did you send the file?"

Wrong: I send the package yesterday.
Right: I sent the package yesterday.
Wrong: Did you sent the email?
Right: Did you send the email?

Grammar details: auxiliaries, questions, and perfect tenses

Use sent after perfect auxiliaries: have/has/had + sent (I have sent, She had sent). Simple past questions and negatives use did + base verb: Did you send? I didn't send.

Have/has/had → sent: "We have sent the invoice."
Did → send: "Did you send the invoice?"
Will → send: "I will send the invoice."

Work - Wrong: Have you send the report yet?
Work - Right: Have you sent the report yet?
Casual - Wrong: I didn't sent the file.
Casual - Right: I didn't send the file.
School - Wrong: She had send the notes before the meeting.
School - Right: She had sent the notes before the meeting.

Real usage: tone and context (work, school, casual)

Tense accuracy matters most in formal writing (reports, client emails) but also helps clarity in quick messages. Use sent to confirm completed actions; use send for requests, promises, and instructions.

Formal/business: prefer perfect when appropriate: "I have sent the updated contract."
School/assignments: mark submission time correctly: "I sent my assignment at 9 p.m."
Casual/texts: people shorten messages, but the correct past is still sent: "He sent it."

Work - Wrong: "Please sent the report by EOD."
Right: "Please send the report by EOD."
Work - Wrong: "I didn't sent the client the proposal."
Right: "I didn't send the client the proposal."
School - Wrong: "Did you sent your references?"
Right: "Did you send your references?"
School - Wrong: "I will sent my lab results later."
Right: "I will send my lab results later."
Casual - Wrong: "She send me the playlist."
Right: "She sent me the playlist."
Casual - Wrong: "I'll sent it in a bit."
Right: "I'll send it in a bit."

Examples: copy-ready wrong → right pairs by context

Use these as quick templates. Each wrong line shows a common mistake; the right line is the corrected sentence.

Work - Wrong: "I sent the monthly figures tomorrow."
Right: "I will send the monthly figures tomorrow."
Work - Wrong: "Have you send the updated budget to finance?"
Right: "Have you sent the updated budget to finance?"
Work - Wrong: "I didn't sent the client the proposal."
Right: "I didn't send the client the proposal."
School - Wrong: "He send his essay before class."
Right: "He sent his essay before class."
School - Wrong: "Please sent the group report to the instructor."
Right: "Please send the group report to the instructor."
School - Wrong: "Have you send your references for the paper?"
Right: "Have you sent your references for the paper?"
Casual - Wrong: "Did you sent the pics from the party?"
Right: "Did you send the pics from the party?"
Casual - Wrong: "She send me the link earlier."
Right: "She sent me the link earlier."
Casual - Wrong: "I'll sent it in the morning."
Right: "I'll send it in the morning."

Try your own sentence

Check the whole sentence, not just the verb. Context usually clarifies the correct tense.

Fix your own sentence: a 3-step checklist + rewrite templates

Checklist: 1) Spot auxiliaries or time words. 2) If you see did → use send. 3) If you see have/has/had or past markers → use sent. For promises or requests, use send.

If the sentence has 'did' → change the verb to send. If it has 'have/has/had' → change the verb to sent.
Pick the simplest auxiliary that matches your meaning: will send (future), have sent (completed), did send (past confirmation).

Rewrite:
Original: "She sent the slides tomorrow." → "She will send the slides tomorrow."
Rewrite:
Original: "Did you sent the memo?" → "Did you send the memo?"
Rewrite:
Original: "I haven't send the link yet." → "I haven't sent the link yet."
Rewrite:
Original: "Please sent the form." → "Please send the form." / "Could you please send the form?"
Rewrite:
Original: "I sent it already." → If you want present-perfect emphasis: "I've sent it already."

Memory trick and fast heuristics

Mnemonic: sent = past - both feel short and finished. Heuristic: ask which helper fits: did? → send. have/has/had? → sent.

Substitute test: replace the verb with go/went. If you'd say went → use sent. If you'd say go/will go → use send.

Spot check: add "yesterday" - if the sentence still makes sense, use sent.
If it's a request or instruction starting with "Please ___", use send.

Usage: "I ___ to the meeting yesterday." → "went" → past → "I sent the files yesterday."
Usage: "Did you ___ it?" → use send: "Did you send it?"

Spacing and hyphenation notes (short and practical)

send and sent are single words with no hyphens. The form resend (to send again) is standard without a hyphen.

Spacing errors like "se nt" are typos; fix them by retyping. Don't invent hyphenation for tense.

Use "resend" (no hyphen): "Please resend the invoice."
'sent' never takes a hyphen or an apostrophe for tense: not "sen-t" or "sent's".

Usage: Wrong: "Please re-send the files."
Right: "Please resend the files."
Usage: Typo fix: "I se nt the email" → "I sent the email."

Similar mistakes and common confusions

Watch scent (smell) and set (place). Scent ≠ sent. Set means to place something; sent means dispatched. Apply the auxiliary test (did vs have) to other irregular verbs like bring/brought and go/went.

If you mean 'smell', use scent/smell: "The flowers smelled nice."
If you mean 'place something', use set: "I set the package on the table."
Use the same helper logic (did vs have) for other verbs.

Wrong: "The flowers sent nice."
Right: "The flowers smelled nice."
Wrong: "I set the package yesterday." (if you meant dispatched)
Right: "I sent the package yesterday."

FAQ

Is it 'Did you send' or 'Did you sent'?

Use "Did you send." Past-simple questions use did + the base form.

Should I write 'have sent' or 'have send'?

'Have sent' is correct. After have/has/had, use the past participle sent.

Which is correct: 'I will send' or 'I will sent'?

'I will send' is correct. Will requires the base form (send).

Is 'resend' spelled with a hyphen?

Modern standard spelling is "resend" (no hyphen). Older sources may show "re-send," but most guides prefer "resend."

Quick way to proofread an email for this mistake?

Scan for auxiliaries: did → check for send; have/has/had → check for sent. When unsure, rewrite with an explicit helper: "I have sent" or "I will send."

When a tool helps (and when rules are enough)

The auxiliary tests above work well for quick checks while writing. For final proofreading of important messages or long documents, a grammar tool can catch missed auxiliaries, typos, and subtle tense mismatches.

If the same mistake repeats in your writing, a checker that flags did/have mismatches can save time and give exact send/sent rewrites to paste into your text.