sentence interruptors
independent clauses
commas in a series
introductory elements
non essential elements
100

insert or errase the commas were neaded

My brother how ever is not coming to the, party.

My brother, however, is not comming to the party.

100

insert or erase the comma were neaded

I was hungry so I made a, sandwich.

I was hungry, so I made a sandwich.

100

Which sentence uses commas in a series correctly?

a) I bought apples bananas and grapes.
b) I bought apples, bananas, and grapes.
c) I bought, apples, bananas, and grapes.

b) I bought apples, bananas, and grapes.

100

Which sentence uses the introductory comma correctly?

a) After lunch we went for a walk.
b) After lunch, we went for a walk.
c) After, lunch we went for a walk.

b) After lunch, we went for a walk.

100

Which sentence correctly uses commas for a nonessential element?

a) My dog, who is very friendly loves to play.
b) My dog who is very friendly, loves to play.
c) My dog, who is very friendly, loves to play.

c) My dog, who is very friendly, loves to play.

200

insert or erase the comma were neaded 

The, book in fact was already sold out.

The book, in fact, was already sold out.

200

insert or erase the comma were neaded

She, wanted to go to the park but it started to rain. 

She wanted to go to the park, but it started to rain.

200

find the mistake in commas:

We visited Paris, Rome London, and Madrid.

We visited Paris, Rome, London, and Madrid.

200

Find the mistake:

When the bell rang the students left quickly.

When the bell rang, the students left quickly.

200

Fix the mistake:

The car which was brand new was already making strange noises.

The car, which was brand new, was already making strange noises.

300

insert or erase the comma were neaded

As you know the results will be announced tomorrow.

As you know, the results will be announced tomorrow.


300

insert or erase the comma were neaded

He can stay here or he can go with, you.

He can stay here, or he can go with you.

300

Add commas where they belong:

For the party we need balloons streamers confetti and cake.

For the party we need balloons, streamers, confetti, and cake.

300

Add the comma where it belongs:

Because it was raining we stayed inside.

Because it was raining, we stayed inside.

300

Add commas where needed:

My brother who lives in Spain is visiting us this summer.

My brother, who lives in Spain, is visiting us this summer.


400

insert or erase the comma were neaded

The teacher on the other hand gave us extra, time for the exam.

The teacher, on the other hand, gave us extra time for the exam.

400

insert or erase the comma were neaded

We missed the bus yet we still arrived on time.

We missed the bus, yet we still arrived on time.

400

Reorder the words into a correct sentence with commas in a series:

likes / pizza / hamburgers / she / pasta / and


She likes pizza, hamburgers, and pasta.

400

Reorder into a correct sentence with an introductory element and comma:

the movie / ended / After / we went home


After the movie ended, we went home.

400

Reorder into a correct sentence with commas around the nonessential element:

The teacher / very strict / is / Mrs. Gomez

Mrs. Gomez, very strict, is the teacher.

500

insert the commas were neaded

yeasterday eaven though i was sick, we whent to the beach

yeasterday, eaven though i was sick, we whent to the beach

500

insert or erase the comma were neaded

You can start the project now, for example, or you can wait until tomorrow.


You can start the project now, for example, or you can wait until tomorrow.

500

Which of these needs a comma in a series, and which does not? Explain.

a) I like running, swimming, and biking.
b) I like to run, swim and bike.

both are correct

500

Which sentence does not need a comma after the introductory word?

a) Yes we can go together.
b) In the morning we’ll start hiking.
c) Yesterday was the best day ever.

(c) does not need a comma because “Yesterday” is not an introductory element but the subject of the sentence.

500

Which sentence needs commas and which does not? Explain.

a) Students who study hard usually do well on exams.
b) Students, who study hard, usually do well on exams.

(a) is correct → “who study hard” is essential (not every student studies hard, only those who do).

(b) is incorrect → The commas wrongly suggest all students always study hard.

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