must be substituted

USAGE SUMMARY

The phrase "must be substituted" is correct and usable in written English.
It can be used when indicating that something needs to be replaced or exchanged for another item or value. Example: "In this recipe, sugar must be substituted with honey for a healthier option."

✓ Grammatically correct

Science

News & Media

Wiki

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

13 human-written examples

Or, as Ceschel puts it: "The act of making publications subverts the diktat that the digital must be substituted for the analogue, the sensorial, the physical.

The Guardian - Arts

If, however, the victim is aware of the danger, the correct cry is "Osonfterte" — for which "Eg gynd y trojadus" must be substituted if both parties are in full view and the encounter is meant only as a joke.

The New Yorker

In much of it, God is identified by what theologians call the tetragrammaton, four letters that cannot be spoken because the word lacks vowels, no one really knows how it should be pronounced and must be substituted with generic placeholders.

The New Yorker

In much of it, God is identified by what theologians call the tetragrammaton, four letters that cannot be spoken — because the word lacks vowels, no one really knows how it should be pronounced — and must be substituted with generic placeholders.

The New Yorker

If a player commits five fouls they must be substituted and cannot return to the game.

BBC

As our observation is retrospective, it must be substituted by future prospective studies.

The Journal of Headache and Pain

Human-verified similar examples from authoritative sources

Similar Expressions

46 human-written examples

The entire molecule must be constructed with iodine in the ultimate location of the radioactive fluorine, and the molecule must either be substituted ortho to the desired site of fluorination or electron poor in relation to a thiophene or 4-methoxybenzene.

Bioconjugate Chemistry

The S function must therefore be substituted by a S a function, considering these social aspects.

Complex Adaptive Systems Modeling

There are other methods that you can use to alleviate the pain of a migraine and these involve less invasive treatments, but if a doctor prescribes drugs for you to deal with the migraine headaches, they must not be substituted for any reason, other than what your doctor informs you.

WikiHow

Michael McKean recalls Brynner's contract for backstage provisions demanding: "Under no circumstances must white eggs be substituted for brown".

The Guardian - Books

Disappointed to be substituted.

Independent

Expert writing Tips

Best practice

When using "must be substituted", ensure the context clearly indicates what is being replaced and what it is being replaced with. Clarity is key for effective communication.

Common error

Avoid using "must be substituted" without specifying the replacement. Always clarify what element needs substitution and what the substitute is. For instance, instead of saying "This must be substituted", specify "This ingredient must be substituted with a non-dairy alternative".

Linguistic Context

The phrase "must be substituted" functions as a modal verb phrase in the passive voice, indicating a requirement or necessity for replacement. As Ludwig AI explains, it signifies that something needs to be exchanged or replaced.

Expression frequency: Common

Frequent in

Science

40%

News & Media

30%

Wiki

15%

Less common in

Formal & Business

10%

Encyclopedias

0%

Reference

0%

Ludwig's WRAP-UP

The phrase "must be substituted" is a common and grammatically sound way to express the necessity of replacing something. As Ludwig AI confirms, it is used across various contexts including science, news, and general information. Its function is to instruct or mandate a change. The phrase is generally neutral to formal in register, ensuring clarity and emphasizing the obligatory nature of the substitution. When using this phrase, it's crucial to clearly specify what is being replaced and the intended replacement for effective communication.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

needs to be replaced

Emphasizes the necessity of replacement, similar to "must be substituted", but uses a more straightforward construction.

should be exchanged

Suggests a swap or exchange, implying a more direct replacement than "must be substituted".

has to be superseded

Indicates that something is being replaced by something newer or more effective; slightly more formal.

is required to be swapped

Highlights the mandatory aspect of the exchange, yet sounds less formal than the original.

ought to be used instead

Suggests a preference for an alternative, rather than a strict requirement.

must be swapped out

Uses the phrasal verb "swap out", providing a more informal and direct way to indicate replacing something.

needs to give way to

Suggests that something is yielding or being replaced by something else, often implying progress or improvement.

should be alternated

Implies a rotating replacement rather than a permanent one.

is to be displaced

Indicates a removal and replacement, often implying a more forceful action.

must be supplanted

Indicates a more complete and perhaps forceful replacement, where the original item is no longer used.

FAQs

How can I use "must be substituted" in a sentence?

You can use "must be substituted" to indicate that something needs to be replaced with something else. For example, "In this recipe, butter "must be substituted" with margarine for a vegan option".

What can I say instead of "must be substituted"?

You can use alternatives like "needs to be replaced", "should be exchanged", or "has to be superseded" depending on the context.

Is it better to use "must be substituted by" or "must be substituted with"?

Both "must be substituted by" and "must be substituted with" are grammatically correct, but "must be substituted with" is more common. "By" is used when indicating the agent doing the substitution, while "with" indicates the replacement item.

When is it appropriate to use "must be substituted" instead of a more direct replacement phrase?

Use "must be substituted" when you want to emphasize the necessity or obligation of replacing something. It's more formal than saying something "needs to be replaced".