Interrogative Sentences: Learn the Grammar of Questions

Interrogative Sentences:
Learn the Grammar of Questions

The grammar of interrogative sentences (questions) can be confusing. Let's use sentence diagrams to better understand these sentences.

interrogative sentences

Today's lesson is inspired by a question emailed to me from Robin.

Robin was diagramming a sentence from the second chapter of the Sentence Diagramming Exercises when she thought of this question.


Elizabeth, 

I was confused by the sentence diagram for the sentence, "Will my mother sing?"

Interrogative Sentence Diagram

It was diagrammed with "will sing" together as the verb. It looks like it reads as, "My mother will sing." How can we show in the sentence diagram that this is a question and that "will" and "sing" are actually far apart?

- Robin 


That's a good question, Robin. We need to review some background information about subjects, verbs, and sentences before I can answer it. Here we go!

Quick Refresher:

  • All sentences contain a subject and a verb. (Mary ran.)
     
  • Subjects (Mary) tell us whom or what a sentence is about. 

  • Verbs (ran) tell us what the subject is being or doing. 

Subjects

Many of our sentences begin with the subject and are followed by the verb.

Mary ran.

My sister voted for the best singer.

Sentence diagrams separate the subject from the verb. The subject goes on the left side of the diagram, and the verb goes on the right side. 

Sentence Diagram of Subject and Verb

Verbs

Verbs can be single words or groups of words. When a group of words is acting as the verb, it is called a verb phrase

Verb phrases consist of one or more helping verbs (is, are, were...) and one main verb (run, grow, smile...).

The helping verb(s) and the main verb come together to do the job of a single verb, so we diagram the whole verb phrase in the verb space of the sentence diagram. 


You should watch this movie!

Cats will meow.

Subject Verb Sentence Diagram

Interrogative Sentences (Questions)

Interrogative sentences often contain verb phrases, and the helping verb(s) and the main verb are usually split up. Many times, the helping verb begins the sentence!

Will you water the plants?

Have you been cooking?

Interrogative Sentence Diagram

These sentences may begin with helping verbs, but when we diagram them, we still have to diagram the subject on the left side and the verb on the right side.

So, now it's time to answer Robin's question. How in the world can we show in the sentence diagram that the diagrammed sentence is a question? 

Have you figured out the answer by looking at the sentence diagram above? 

We show this by maintaining the capitalization of the original sentence! Notice that have in the sentence diagram above begins with a capital letter - just as it does when we write it out as a question.

We all know that sentences need to begin with capital letters. By maintaining the original capitalization of the sentence, you know which word starts the sentence and you can figure out whether or not the sentence is a question.

Sentence Diagram Question

Will my mother sing?

We know that the sentence in this diagram is a question because the word will begins with a capital letter. 

Sentence Diagram Statement

My mother will sing.

We know that the sentence in this diagram is not a question because the word will begins with a lowercase letter.

Since my has a capital m, we know that it begins the sentence.

There you have it. Now you know about the grammar of questions!

If you'd like to teach or learn grammar the easy way—with sentence diagrams—check out our Get Smart Grammar Program.

It starts from the very beginning and teaches you grammar and sentence diagramming in easy, bite-size lessons. 

The Get Smart Grammar Program
Elizabeth O'Brien

Hello! I'm Elizabeth O'Brien, and my goal is to get you jazzed about grammar. 

I am amazed at all of your great resources. I'm now developing my sentence diagramming skills and learning how to use proper grammar. Your information is a big help for me as I teach my two lovely daughters at home. You've given me knowledge and confidence in myself! 

- Lynn, Homeschool Mom

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