The syllabus lists several introductory subjects that students can take in their first year.

The preparatory subject 'it' is used to introduce clauses that would otherwise be awkward.

The linguistics professor explained that a dummy subject like 'it' or 'there' is used when the actual subject appears later.

The department revised its list of preparatory subjects to better prepare students for advanced seminars.

In the test corpus, several dummy subjects were inserted to examine parser behavior.

Because the two names belonged to different ranks, the compiler treated the older name as a subjective synonym of the newer one based partly on personal judgment.

In the sentence 'It's important to exercise', the introductory subject 'it' functions as a placeholder rather than a referent.

When the conversation got heated, he tried to change the subject to something light.

The committee debated the subject-matter of the new policy for hours before reaching a consensus.

Whether he will come tomorrow is a subject clause that often confuses learners.