Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
contain a subject
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "contain a subject" is correct and usable in written English.
It can be used in contexts discussing grammar, sentence structure, or the components of a statement. Example: "Every complete sentence must contain a subject to convey a clear meaning."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(20)
involve a complication
have an issue
display a shortcoming
constitute a problem
contains a problem
contained a problem
present a difficulty
included a problem
suffer from a defect
contain a glitch
tackle a problem
includes a problem
documents a problem
contain a problem
exhibit a flaw
pose a challenge
include a problem
encounter an obstacle
containing a problem
are a problem
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
6 human-written examples
Splice Girls, and Boys "Comma splice" is a term used for the linking of two independent clauses — that is, grammatical units that contain a subject and a verb and could stand alone as sentences — with a comma.
News & Media
"Comma splice" is a term used for the linking of two independent clauses -- that is, grammatical units that contain a subject and a verb and could stand alone as sentences -- with a comma.
News & Media
A clause is a group of words that contain a subject and a verb - for example: She ate.
News & Media
According to Aristotle, every such sentence must have the same structure: it must contain a subject (hupokeimenon) and a predicate and must either affirm or deny the predicate of the subject.
Science
The first slot must contain a subject and object, a main form of a verb, an adverb or a conjunction (except for the light conjunctions a, "and", i, "and even" or ale, "but").
Wiki
The RRA should contain a Subject Matter Specialist Knowledgeable not only of the principal production systems, but also conversant with the cultural and socio-economic conditions of the area.
Human-verified similar examples from authoritative sources
Similar Expressions
54 human-written examples
A clause is a group of words containing a subject and a verb.
News & Media
Every grammatically correct English sentence contains a subject and a predicate.
They can be used to join 2 or more sentences or clauses (a clause is a group of words which contains a subject and a verb).
News & Media
The comma marks out a clause – or grammatical unit containing a subject and a verb – as well as telling the reader to pause briefly.
News & Media
The system contains a subject identification module unit which uses RFID tags to identify and discriminate an authorized user from others.
Expert writing Tips
Best practice
When discussing sentence structure, ensure that the verb accurately reflects the relationship between the subject and other elements. For example, use “contain” when you want to show the subject as an integral part of the whole.
Common error
Avoid using "contain a subject" repetitively in formal writing. Vary your language by using synonyms like "include", "feature", or restructuring the sentence for better clarity.
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "contain a subject" functions as a verb phrase used to describe the composition or essential elements of a sentence, clause, or other grammatical unit. Ludwig AI confirms its grammatical correctness and usability in written English.
Frequent in
Science
30%
News & Media
30%
Wiki
20%
Less common in
Formal & Business
10%
Encyclopedias
5%
Reference
5%
Ludwig's WRAP-UP
In summary, the phrase "contain a subject" is a grammatically sound and commonly used expression to describe the essential components of a sentence or clause. Ludwig AI indicates that it's usable in various contexts. While its register ranges from neutral to formal, it is frequently seen in scientific, news, and wiki sources. When writing, while "contain a subject" can be appropriate, it's also helpful to know similar phrases to express the same idea such as "include a subject" or "have a subject", and to avoid overuse, particularly in formal contexts.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
include a subject
Replaces "contain" with "include", maintaining the meaning of encompassing a subject.
have a subject
Substitutes "contain" with "have", focusing on possession rather than inclusion.
incorporate a subject
Uses "incorporate" to emphasize the integration of a subject into a larger whole.
comprise a subject
Employs "comprise" to indicate that the subject is a component part.
encompass a subject
Replaces "contain" with "encompass", suggesting a broader inclusion.
feature a subject
Uses "feature" to highlight the subject as a prominent element.
consist of a subject
Changes the structure to emphasize that the whole is made up of the subject.
hold a subject
Substitutes "contain" with "hold", suggesting the phrase maintains or possesses the subject
embody a subject
Uses "embody" to indicate that the subject is represented or expressed.
present a subject
Replaces "contain" with "present", focusing on the act of showing or introducing the subject.
FAQs
How can I use "contain a subject" in a sentence?
You can use "contain a subject" to describe the essential components of a clause or sentence. For instance, "Every grammatically correct sentence must "contain a subject" and a predicate".
What can I say instead of "contain a subject"?
You can use alternatives like "include a subject", "have a subject", or "incorporate a subject" depending on the specific context.
Is it always necessary for a clause to "contain a subject"?
In most cases, yes. A clause typically requires a subject and a verb to form a complete thought. However, there are exceptions, such as imperative sentences where the subject is implied.
What is the difference between "contain a subject" and "feature a subject"?
"Contain a subject" simply means that a subject is present. "Feature a subject" implies that the subject is a prominent or important element.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested