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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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the two classes of

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "the two classes of" is correct and usable in written English.
It can be used when categorizing or distinguishing between two specific groups or types within a broader context. Example: "In our study, we identified the two classes of organisms: prokaryotes and eukaryotes."

✓ Grammatically correct

Science

News & Media

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

The two classes of substrates exhibit different specificity requirements.

Getting the two classes of physics theories to work together, though important, is not enough, either.

News & Media

The Guardian

Teng and Zakian also studied in detail the growth properties of the two classes of survivors.

Science & Research

Nature

The two classes of shares are identical, except that one has voting rights.

News & Media

The New York Times

There are two major differences in behavior in the two classes of materials.

Science

Polymer

Many drawbacks of the two classes of particle methods are mitigated.

Two distinct membrane dynamics, corresponding to the two classes of polyphenols used, were observed.

A separate processing of the two classes of wire wastes is recommended.

The two classes of share will be one for Bacardi family members and another for the rest.

The line of demarcation between the two classes of vitrified materials—stoneware and porcelain is extremely vague.

Encyclopedias

Britannica

The points made in this exhibit lead to four generalizations about the two classes of service systems.

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Expert writing Tips

Best practice

When using "the two classes of", ensure that the categories you are referring to are clearly defined and distinct from each other to avoid ambiguity.

Common error

Avoid using "the two classes of" when the distinction between the categories is unclear or overlapping. Provide specific criteria for each class to ensure readers understand the differences.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

81%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "the two classes of" functions as a determiner phrase that introduces a categorization or division of a subject into two distinct groups. As Ludwig AI pointed out, the phrase is correct and usable in written English.

Expression frequency: Very common

Frequent in

Science

54%

News & Media

33%

Formal & Business

13%

Less common in

Encyclopedias

2%

Wiki

1%

Social Media

0%

Ludwig's WRAP-UP

In summary, "the two classes of" is a grammatically sound and frequently used phrase for categorizing a subject into two distinct groups. As confirmed by Ludwig AI, the phrase is correct and usable. It is most commonly found in scientific and news contexts, and its register ranges from neutral to formal. When using this phrase, ensure that the categories are clearly defined to avoid ambiguity. Consider alternatives like "the two categories of" or "the two types of" for slight variations in tone or emphasis.

FAQs

How can I use "the two classes of" in a sentence?

Use "the two classes of" to categorize a subject into two distinct groups based on specific characteristics. For example, "The study examined the two classes of investors: those focused on long-term growth and those prioritizing immediate returns."

What are some alternatives to "the two classes of"?

You can use alternatives like "the two categories of", "the two types of", or "the two groups of" depending on the context.

Is it more formal to say "the two classes of" or "the two types of"?

"The two classes of" is generally perceived as slightly more formal than "the two types of", but both are acceptable in most formal and informal contexts.

What's the difference between "the two classes of" and "the two kinds of"?

"The two classes of" and "the two kinds of" are largely interchangeable. However, "the two classes of" often suggests a more structured or defined categorization, while "the two kinds of" can be more informal and general.

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Source & Trust

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Real-world application tested

Most frequent sentences: