thank you for bring (bringing) this

Writers often write for + base verb (for send, for review) when standard English requires for + -ing (for sending, for reviewing). That error happens because for usually acts as a preposition, and prepositions take noun-like forms such as gerunds.

Quick answer: after for use the gerund (or rephrase with to + infinitive)

When for is a preposition, follow it with a noun or gerund (for sending, for being). If you mean purpose, prefer to + infinitive (to send, to review).

Preposition + gerund = correct: for sending the report.
Preposition + base verb = incorrect: for send the report.
Purpose = to + verb: I called to ask, not I called for ask.

Core explanation: why 'for' usually needs a gerund

For normally functions as a preposition. Prepositions take noun phrases or gerunds. The -ing form turns the action into a thing: for sending, for helping, for deciding. By contrast, to + infinitive often signals purpose (I called to confirm).

Correct: Thanks for sending the files.
Incorrect: Thanks for send the files.
If you mean purpose, try: I called to confirm the time.

Grammar details: gerund vs. infinitive (short, practical)

Use for + -ing when the phrase names or describes an activity (This form is for completing the survey). Use to + infinitive to state purpose (I called to complete the survey). Gerunds label actions; infinitives point to intent.

For + -ing = names the activity (for completing your profile).
To + infinitive = shows purpose (to complete your profile).
When both work, pick the form that matches your intended meaning and tone.

Real usage and tone: work, school, and casual examples

Below are typical sentences from emails, assignments, and messages. Each wrong example uses for + base verb; the right examples show a gerund or a clearer infinitive rewrite.

Work:
Wrong: "Thanks for review the proposal."
Right: "Thanks for reviewing the proposal."
Work:
Wrong: "This form is for sign before shipment."
Right: "This form is for signing before shipment." (Or: "Sign this form before shipment.")
Work:
Wrong: "We are looking for hire a contractor."
Right: "We are looking to hire a contractor." (Also acceptable: "We are looking for hiring a contractor." - less natural)
School:
Wrong: "This worksheet is for practice verb tenses."
Right: "This worksheet is for practicing verb tenses."
School:
Wrong: "For submit the essay, click here."
Right: "To submit the essay, click here." (Or: "For submitting the essay, use the link.")
School:
Wrong: "Thanks for help on the group project."
Right: "Thanks for helping on the group project."
Casual:
Wrong: "Thanks for invite me to your party."
Right: "Thanks for inviting me to your party."
Casual:
Wrong: "I'm sorry for be late."
Right: "I'm sorry for being late."
Casual:
Wrong: "For watch later, save the video."
Right: "To watch later, save the video." (Or: "For watching later, save the video.")

Examples: common mistakes and immediate fixes (copy-paste templates)

Change the verb after for into its -ing form, or switch to to + infinitive when that fits better. Replace the verb or object with your own to fix similar sentences.

Wrong: "Thanks for help with this."
Right: "Thanks for helping with this."
Wrong: "I called for ask about the status."
Right: "I called to ask about the status." (Or: "I called for asking about the status." - less natural)
Wrong: "Please fill out the form for return."
Right: "Please fill out the form for returning it." (Better: "Please return the completed form.")
Wrong: "This playlist is for listen while studying."
Right: "This playlist is for listening while studying."
Wrong: "We stopped for talk to the manager."
Right: "We stopped to talk to the manager." (Prefer infinitive for purpose.)
Wrong: "The guide is for help new users."
Right: "The guide is for helping new users." (Or: "The guide helps new users.")
Wrong: "For fix the bug, run the test."
Right: "To fix the bug, run the test." (Or: "For fixing the bug, run the test." - descriptive)

Try your own sentence

Test the whole sentence, not just the phrase. Context usually makes the correct form obvious.

How to fix your sentence: a short checklist + rewrites

When you spot for + base verb, run these steps and use the rewrites below.

Is for acting as a preposition (followed by an activity or noun)? If yes, change the verb to -ing.
If you mean purpose, use to + infinitive instead of for + -ing.
Read aloud: gerunds sound descriptive; infinitives sound intentional and concise.

Rewrite (Work): "Please send the agreement for sign." → "Please send the agreement for signing." → Better: "Please sign and return the agreement."
Rewrite (School): "This worksheet is for learn verb patterns." → "This worksheet is for learning verb patterns." → Or: "Use this worksheet to learn verb patterns."
Rewrite (Casual): "Thanks for invite me." → "Thanks for inviting me."

Memory tricks and quick rules of thumb

Two quick checks stop most errors: insert "the act of" after for to see if the phrase makes sense, or change the verb to -ing and read it aloud. If one reads correctly, use the gerund.

If you want to explain why someone did something, use to + infinitive; if you want to label an activity or describe what something is for, use for + -ing.

Test 1: Replace for + verb with for + "the act of" - if that works, use -ing (for the act of sending → for sending).
Test 2: Try a concise infinitive phrase (To send...) to check if purpose is clearer with to + verb.
Visual rule: underline every for immediately followed by a base verb; treat those as red flags.

Spacing, hyphenation, and other mechanical points

Do not hyphenate for + -ing (write "for signing", not "for-signing" or "forsigning"). Hyphens belong to compound modifiers before nouns (a well-known rule), not to preposition + gerund combinations.

Also check spacing: use a single space after for and avoid stray punctuation between for and the gerund.

Correct: for signing, for applying, for being.
Wrong: for-signing, forapplying.
Different case (hyphen OK): for-profit company - here the hyphen links a compound modifier.

Similar mistakes to watch for

These errors often appear alongside for + base verb: using "for to do", verbs that require gerunds, and meaning changes when switching -ing vs. infinitive.

'for to do' - usually wrong. Use 'to do' or 'for doing' depending on meaning.
Verbs that require gerunds: enjoy, suggest, avoid, consider - check forms after these verbs or after prepositions.
Meaning shifts: "I stopped smoking" (I quit) vs "I stopped to smoke" (I paused another activity to smoke).
Usage: Incorrect: "I saved it for to open later." Better: "I saved it to open later." (Or: "for opening later")

FAQ

Can I ever use 'for' + base verb (for to do something)?

Modern standard English does not accept for directly followed by a base verb. Use for + gerund (for doing) or to + infinitive (to do) according to meaning.

When should I choose 'for + -ing' over 'to + infinitive'?

Choose for + -ing when you name or describe an activity. Choose to + infinitive when you state intent or purpose concisely.

What is the fastest way to fix these errors in a long document?

Search for "for " followed by a base verb. For each hit, try swapping the verb to -ing and also test a to + infinitive to see which preserves meaning and tone.

Are there verbs you should always use with -ing after prepositions?

Yes. After prepositions (including for), use gerunds: "interested in learning," "good at drawing," "for improving performance." Verbs like enjoy, avoid, suggest take gerunds, not infinitives.

Will native speakers ever write 'for + base verb' in emails?

Sometimes in hurried or nonstandard writing you might see it, but in professional or academic writing you should avoid it. Use the gerund or rephrase with the infinitive to sound natural.

Quick habit to build

At the end of a message, scan for for + verb and apply the three-step checklist: swap to -ing, test to + infinitive, and read aloud. That small habit fixes most errors quickly.

If you prefer automated help, a grammar checker will flag many of these patterns and offer usable rewrites you can accept or adapt.