Simple, compound and Complex Sentences

Sentence Structures – English Mind Academy

📘 Simple Sentence

One complete idea. Like a full meal on one plate — Subject (who?), Verb (action), Complement (what / where / how?). Always ends with a period ( . ).

Think of it as the foundation. Every great sentence starts here.

Structure

Subject Who?	Verb Action/State	Complement What/Where/How?	.
I	work	at a restaurant downtown	.
She	studies	English every morning	.
My kids	go	to school by bus	.
We	need	more time to practice	.

Subject

Verb

Complement

Period ( . )

Complete sentences I work at a restaurant downtown.
She studies English every morning.

🎯 Practice — Simple Sentence

Three types of exercises to lock in the structure. Take your time!

Exercise A

Fill in the table

Think about your daily life — work, family, habits. Complete each row. Every box must be filled!

Subject	Verb	Complement	.
			.
			.
			.
			.
			.

Exercise B

Put the words in order

Click the words in the correct order to build the sentence. Click a word in the answer area to send it back.

Exercise C

Multiple Choice

Choose the best answer for each question. You'll get instant feedback!

📗 Compound Sentence

Two complete ideas connected. Like two friends walking together. You join two simple sentences with a connector. Put a comma ( , ) before the connector. End with a period ( . ).

Structure

Connectors: and+ addition but+ contrast so+ result

Subject	Verb	Complement	,	Connector	Subject	Verb	Complement	.
I	work	every day	,	and	I	study	at night	.
She	wants	a new job	,	but	she	is	afraid to try	.
He	missed	the bus	,	so	he	called	an Uber	.
My wife	cooks	dinner	,	and	I	wash	the dishes	.

Subject

Verb

Complement

Comma ( , )

Period ( . )

Complete sentences I work every day, and I study at night.
She wants a new job, but she is afraid to try.

🎯 Practice — Compound Sentence

Remember: comma before the connector, period at the end!

Exercise A

Fill in the table

Use and, but, or so as your connector. Connect two real ideas from your life!

Subject	Verb	Complement	,	Connector	Subject	Verb	Complement	.
			,					.
			,					.
			,					.
			,					.
			,					.

Exercise B

Put the words in order

Click the tiles to build the compound sentence. Watch out for the comma!

Exercise C

Multiple Choice

Choose the best answer. Pay attention to connectors and punctuation!

📙 Complex Sentence

One main idea + one supporting idea. Think of a star and a supporting actor. The connector goes between the two ideas — it explains a reason, a time, or a contrast. No comma when the connector is in the middle. End with a period ( . ).

Structure

Connectors: because→ reason when→ time although→ contrast

Subject	Verb	Complement	Connector	Subject	Verb	Complement	.
I	study	English	because	I	want	a better job	.
She	feels	nervous	when	she	speaks	in English	.
He	passed	the interview	although	he	was	very nervous	.
They	don't stop	practicing	because	they	know	it's worth it	.

Subject

Verb

Complement

Period ( . )

Complete sentences I study English because I want a better job.
She feels nervous when she speaks in English.

🎯 Practice — Complex Sentence

Use because, when, or although — and no comma in the middle!

Exercise A

Fill in the table

Think about your goals, habits, or feelings. Use a real situation from your life!

Subject	Verb	Complement	Connector	Subject	Verb	Complement	.
							.
							.
							.
							.
							.

Exercise B

Put the words in order

Click the tiles to build the complex sentence. Remember: no comma when the connector is in the middle!

Exercise C

Multiple Choice

Choose the best answer. Think about connectors and sentence structure!

✍️ My Paragraph

Now it's time to put it all together! A good paragraph mixes the three sentence types — it gives your writing rhythm, depth, and variety.

Choose a topic below, read the model paragraph, then write your own 5-sentence paragraph using all three types.

Step 1 — Choose your topic

💼

My Job

Work, schedule, coworkers

👨‍👩‍👧

My Family

Routines, relationships, home

🎯

My English Goals

Why you study, your dreams

Step 2 — Read the model paragraph

This is an example. Notice how the three sentence types work together to make the paragraph flow naturally.

S Simple sentence CP Compound sentence CX Complex sentence

Step 3 — Write your paragraph

Write one sentence in each box. Use your chosen topic. Be honest — the best sentences come from real life!

Sentence 1 — Simple (introduce your topic)

Structure: Subject + Verb + Complement + .

0 / 200

Sentence 2 — Simple (add a detail)

Structure: Subject + Verb + Complement + .

0 / 200

Sentence 3 — Compound (connect two ideas)

Structure: S + V + C , + and/but/so + S + V + C + .

0 / 250

Sentence 4 — Complex (give a reason or contrast)

Structure: S + V + C + because/when/although + S + V + C + .

0 / 250

Sentence 5 — Simple (close with a strong idea)

Structure: Subject + Verb + Complement + .

0 / 200

Step 4 — See your paragraph

Your paragraph appears here as you write. Watch it come to life!

📄 Your paragraph

Start writing above and your paragraph will appear here…

Step 5 — Self-check

Before you finish, go through this checklist. Click each box when you're confident!

I wrote at least 2 Simple sentences (S + V + Complement + .)

I wrote 1 Compound sentence with a comma before the connector (and / but / so).

I wrote 1 Complex sentence using because, when, or although — with no comma in the middle.

Every sentence ends with a period ( . ).

My paragraph is about one topic and the ideas connect naturally.

I read my paragraph out loud — it sounds good and makes sense! 🎤

Checklist progress 0 / 6

🏆

Paragraph Complete!

You used all three sentence types. That's real English writing, familia. ¡Lo lograste!

How to Build Your Sentences

Structure

Fill in the table

Put the words in order

Multiple Choice

Structure

Fill in the table

Put the words in order

Multiple Choice

Structure

Fill in the table

Put the words in order

Multiple Choice

Step 1 — Choose your topic

Step 2 — Read the model paragraph

Step 3 — Write your paragraph

Step 4 — See your paragraph

Step 5 — Self-check

Paragraph Complete!

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