if then

USAGE SUMMARY

The phrase 'if then' is correct and usable in written English.
You can use it when you want to introduce a statement that will be true if the first part of the sentence is true. For example: "If the temperature drops below freezing, then the roads will be icy."

✓ Grammatically correct

Science

News & Media

Academia

Human-verified examples from authoritative sources

Exact Expressions

58 human-written examples

If, then.

Massachusetts Institute of Technology

21, if then.

The New York Times

If then, even.

The New York Times - Sports

Another what if, then.

The Guardian - Sport

If then.

Forbes

Namely, if, then ; if, then ; if, then.

Advances in Difference Equations

operational translation 7   if then  .   if then.

EURASIP Journal on Wireless Communications and Networking

If, then for all and if, then.

Journal of Inequalities and Applications

If, then If, then converges a.e.

Journal of Inequalities and Applications

Human-verified similar examples from authoritative sources

Similar Expressions

2 human-written examples

Use "if-then" thinking.

WikiHow

Use an "if-then" plan.

WikiHow

Expert writing Tips

Best practice

In formal writing, consider replacing "if then" with more sophisticated alternatives like "given that" or "provided that" for enhanced stylistic variation.

Common error

While sometimes omitted in informal speech, the "then" is often essential in formal writing for clarity and emphasis. Avoid ambiguity by including "then" unless the implication is exceptionally clear.

Linguistic Context

The phrase "if then" functions as a conditional conjunction, linking a condition to its consequence. It establishes a cause-and-effect relationship, indicating that the statement following "then" is contingent upon the statement following "if". Ludwig AI confirms that this phrase is grammatically correct and widely used.

Expression frequency: Very common

Frequent in

Science

54%

News & Media

19%

Academia

7%

Less common in

Wiki

2%

Formal & Business

0%

Encyclopedias

0%

Ludwig's WRAP-UP

In summary, the phrase "if then" is a versatile conjunction used to express conditionality and logical consequences. Ludwig AI confirms its grammatical correctness and widespread usage. It is most common in scientific and technical writing, but also appears frequently in news media. While grammatically sound, omitting "then" can reduce clarity. For more formal writing, consider alternatives such as "provided that" or "in that case". Understanding these nuances will help you use "if then" effectively and appropriately in your writing.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

assuming that

This phrase focuses on the hypothetical nature of the condition.

in that case

This phrase implies a direct consequence or action based on the preceding condition.

provided that

This phrase emphasizes the supplied condition as a prerequisite.

given that

This phrase highlights the premise or condition that is being considered.

under those circumstances

This phrase is more formal and emphasizes the specific situation leading to a result.

should that happen

This phrase offers a slightly more literary or formal way of expressing a conditional.

in the event that

This phrase emphasizes the possibility of a particular situation arising.

when that occurs

This phrase is more temporal, focusing on the moment the condition is met.

on the condition that

This phrase stresses the stipulation or requirement for a specific outcome.

if and only if

This phrase indicates a biconditional relationship, implying necessity and sufficiency.

FAQs

How to use "if then" in a sentence?

The phrase "if then" introduces a conditional statement, where 'if' presents a condition and 'then' its consequence. For example, "If it rains, then the game will be canceled."

What can I say instead of "if then"?

You can use alternatives like "in that case", "provided that", or "assuming that", depending on the context.

Is it grammatically correct to omit 'then' in an "if then" statement?

While omitting "then" is common in informal speech and writing, its inclusion generally improves clarity and is preferred in formal contexts. Omitting it can sometimes lead to ambiguity.

What's the difference between "if then" and "if and only if"?

The phrase "if then" indicates that the 'then' part is true when the 'if' part is true. "If and only if" expresses a biconditional statement, meaning the 'then' part is true if and only if the 'if' part is true, and vice versa.