This tools (These tools)

Quick answer

Is "common mistakes this_tools" correct?

No. In standard English that phrase looks like a typo or a nonstandard construction. It lacks the preposition or punctuation needed to link the words naturally.

Most readers will read it as an editing error.
Choose a clearer alternative that shows the relationship between the noun and the tool.

Which form should you use?

Pick the version that matches your meaning. Common options are:

Common mistakes with this tool - problems caused by the tool or when people use it.
Common mistakes in this tool - errors found inside the tool (e.g., a document or module).
Common mistakes: this tool - a headline introducing the tool as the topic.
Common mistakes this tool causes - if you mean the tool creates the mistakes.

Choose the preposition or punctuation that makes the relationship explicit instead of leaving the words jammed together.

Why writers make this mistake

Writers often hear a phrase in speech and then write it without checking how the words fit on the page. Fast typing and unclear mental phrasing cause the parts to lose their connectors.

Sound-based guessing: it "sounds" right but lacks a preposition.
Spacing confusion when a compound idea isn't decided as a unit.
Overcorrection: removing a preposition to shorten a title.
Rushing: no time to reread and insert the link word.

Real usage: work, school, and casual examples

Below are practical examples showing how to say the same idea correctly in different contexts.

Work - Wrong: Common mistakes this_tools in the migration plan.
Work - Right: Common mistakes with this tool in the migration plan.
Work - Wrong: The QA report lists common mistakes this_tools.
Work - Right: The QA report lists common mistakes in this tool.
Work - Wrong: We should review common mistakes this_tools next week.
Work - Right: We should review common mistakes with this tool next week.

School - Wrong: Common mistakes this_tools on the lab assignment.
School - Right: Common mistakes in this tool on the lab assignment.
School - Wrong: List common mistakes this_tools for your report.
School - Right: List common mistakes with this tool for your report.
School - Wrong: The instructor pointed out common mistakes this_tools.
School - Right: The instructor pointed out common mistakes in this tool.

Casual - Wrong: Common mistakes this_tools make me nervous.
Casual - Right: Common mistakes with this tool make me nervous.
Casual - Wrong: Saw common mistakes this_tools on the forum.
Casual - Right: Saw common mistakes related to this tool on the forum.
Casual - Wrong: Is common mistakes this_tools fixed yet?
Casual - Right: Are the common mistakes with this tool fixed yet?

Try your own sentence

Test the phrase inside the full sentence. Context usually reveals the missing preposition or punctuation.

Wrong vs right examples you can copy

These tight pairs show quick, copy-paste fixes.

Wrong: The list of common mistakes this_tools is long.
Right: The list of common mistakes with this tool is long.
Wrong: Common mistakes this_tools: update the guide.
Right: Common mistakes with this tool: update the guide.
Wrong: We've tracked common mistakes this_tools during testing.
Right: We've tracked common mistakes in this tool during testing.
Wrong: The workshop covers common mistakes this_tools makes.
Right: The workshop covers common mistakes this tool makes.
Wrong: Can you fix common mistakes this_tools?
Right: Can you fix the common mistakes with this tool?
Wrong: Common mistakes this_tools often confuse users.
Right: Common mistakes with this tool often confuse users.

How to fix your own sentence

A short process prevents guessing and keeps tone natural.

Step 1: Decide the relationship - is the tool the place, cause, or topic?
Step 2: Add the preposition or punctuation that expresses that relationship (in, with, about, :, causes).
Step 3: Reread the whole sentence for flow and adjust wording if needed.

Three quick rewrites you can copy:

Original: This plan is common mistakes this_tools if everyone stays late.
Rewrite: This plan highlights common mistakes with this tool if everyone stays late.
Original: The assignment feels common mistakes this_tools now.
Rewrite: The assignment highlights common mistakes in this tool now.
Original: Is that common mistakes this_tools this afternoon?
Rewrite: Are those the common mistakes with this tool this afternoon?

A simple memory trick

Link the correct preposition to the meaning. If you mean "errors caused by the tool" use "with." If you mean "errors inside the tool," use "in." If you're labeling a section, use a colon or rephrase as a title.

With = caused by or related to the tool.
In = located inside the tool (content, file, module).
Colon or rewording = use for headlines or summaries.

Similar mistakes to watch for

Spacing and hyphenation errors often cluster together. Scan nearby text for related problems.

Missing prepositions: "problems app" → "problems with the app" or "app problems."
Compound modifiers: "user friendly guide" → "user-friendly guide" when used before a noun.
Hyphen confusion: "re entry" → "re-entry" or "reentry" depending on the style you follow.
Verb-form confusion: "caused by" vs "causing" - pick the correct tense and voice.

FAQ

Is "common mistakes this_tools" ever correct?

Rarely. Only in a very specific code or filename context where underscores are intentional; otherwise it reads as a mistake.

What should I use instead of "common mistakes this_tools"?

Use "common mistakes with this tool," "common mistakes in this tool," or rephrase the headline with a colon or hyphen to clarify meaning.

How can I check my full sentence?

Read the sentence aloud and ask what role the tool plays - subject, location, cause - then add the matching connector (in/with/about/colon).

Why does the wrong version look plausible?

Spoken language often drops small words, and when writers transcribe speech directly they omit the preposition that binds the ideas on the page.

Should I rely on spellcheck alone?

Spellcheck flags typos but often misses missing words or wrong prepositions. A quick context read is usually faster and more reliable.

Check the whole sentence before you send it

Small fixes like adding a preposition or a colon take seconds and make your meaning clear. When in doubt, read the sentence aloud and insert the connector that reveals the relationship between the parts.