Yes/No Interrogative

An interrogative sentence or clause that can be answered by 'yes' or 'no'. For example, Would you like a drink?
See also

Zero Relative Clause

A relative clause from which the relative pronoun has been ellipted, for example: This is the car I want (compare: This is the car that I want)

Zero That-Clause

A that-clause from which the subordinator that has been ellipted, for example He said he'd be a bit late (compare: He said that he'd be a bit late)