Example 1
Can I get your number?
This is an example of an interrogative sentence because it asks a question. It's often also an example of wishful thinking… womp womp.
Example 2
Where did the soda go?
We may never know, but you should know that this is an interrogative sentence. The question mark is a dead giveaway. As dead as the jerk that stole your Diet Coke.
Example 3
Should I stay or should I go?
Here we have an interrogative sentence. It's also the title of seminal punk band The Clash's only #1 single in the UK (which, if you ask us, is a crime).