should this sentence be underline

Watch out for cars when crossing the street.

No, this sentence should not be underlined.

Generally, when it comes to formatting sentences, using italics (rather than underlining) is more common in most contexts, including informal writing, essays, articles, and other forms of writing. However, specific guidelines may vary depending on the style guide or formatting requirements you are following.

If you need to adhere to a specific style guide, such as the Modern Language Association (MLA) or American Psychological Association (APA), it's best to refer to their guidelines for formatting titles and emphasis within sentences.

For example, according to MLA guidelines, you should use italics for titles of larger works or publications (e.g., books, newspapers, movies) and quotation marks for titles of shorter works, such as articles or chapters. In APA style, italics are used for emphasis or to highlight specific terms, but not for titles of works.

In the sentence you provided, "Watch out for cars when crossing the street," there is no specific title or emphasis that needs to be indicated. Therefore, it is not necessary to underline or italicize any part of the sentence.

No, the sentence "Watch out for cars when crossing the street" does not need to be underlined. In modern writing, it is more common to use italics or quotation marks for emphasis rather than underlining. However, in some cases, such as when writing by hand or following a specific style guide, underlining might be used for emphasis.