Perfect Tenses: Summary and Quiz

Written by Leny Ortega

In the previous posts, I have summarized the simple tenses. In this post, we summarize the perfect tenses. Review exercises are provided below to assess your mastery of the lesson.

Perfect tenses have three types: Present perfect, Past perfect and future perfect.

The present perfect tense denotes actions that began in the past and continues up to the present time. It is also used to suggest events that happened at unspecific time before now. Has (singular) and have (plural) + past participle of the given verb are used to form the present perfect tense.

The past perfect tense of the verb is formed with Had (for singular and plural noun)+ past participle of the verb. This tense of the verb is used to express an action that happened before another past action occurred. Always remember that the second past action must use the simple past tense of the verb.

Similarly, for the future perfect tense two actions/events are required here. But, these actions are intended to be completed in the future. Expressions such as by tomorrow, by next year, ten years from now, etc. are commonly used plus the future perfect tense (will have + past participle). This is to suggest that the action is completed before a certain time.

Practice Quiz

Choose the correct form of the perfect tense for each of the following sentences.

1.) Ebola virus (has, have) spread in countries like Africa.

2.) The reinforcement team (arrived, had arrived) after the forty-four Special Action force members (has died, had died) in the encounter.

3.) The country (will have experienced, will experience) drought before the summer comes next year.

5.) The government of China (expressed, has expressed) its desire to end the territorial row with the Philippines.

6) Melinda (will have become, had become) a lawyer before her mother retires.
World Health Organization (WHO) (warned, had warned) the public about the MERS-COV before it became widespread.

7.) The government (ordered, has ordered) recall of a certain brand of apples in the market because of its toxic contamination.

8.) Food and Drug Administration (has advised, have advised) the public against the proliferation of untested diet pills in the market.

9.) The US government (has tested, had tested) all its local produce before it reached the market.

10.) Two years from now, Melinda (will have been, will become) a licensed physical therapist.

Answer key

  1. Has
  2. Arrived, had died
  3. Will have experienced
  4. Has experienced
  5. Will have become
  6. Had warned
  7. Has ordered
  8. Has advised
  9. Had tested
  10. Will have been

Simple Tenses: Summary and Quiz

Written by Leny Ortega
Previously, we have discussed simple and compound tenses. To recapitulate, simple tenses consist of present tense, past tense and future tense. The simple present tense is formed using the base form of the verb such as talk, walk, etc. (for plural noun or pronoun) or the s-form of the verb (talks, walks, etc) for singular noun or pronoun. Other forms of the verbs like the “be” verb such as is/ are; auxiliary verbs like has / have, do / does can be used. These forms of the verb are used to express actions that are habitually done, to state a fact or general truth.
The past tense is formed with the following verbs like was (singular) / were (plural), had and did (both for singular and plural). For regular verbs you just add –ed (talked, walked, etc) or a change in spelling is needed for irregular verbs (eat = ate, write =wrote, etc). This tense of the verb is used for actions that happened or completed in a definite past time. Time expressions like yesterday, last month, few days ago, etc. are used.
For actions that are intended to be completed or done in a particular time in the future, Future tense of the verb is used. Here, expressions like tomorrow, next year, next summer, etc. will signify futurity. Though, will /shall + base form of the verb can be used most of the time will + base form of the verb is preferred by most people both in oral / written communication.
To evaluate mastery of these simple tenses, exercises below are designed for this purpose.
Choose the appropriate verb in the following sentences. Check your answers below.
  1. Citizens in a democratic country (has, have) to select a leader through election process.
  2. Pump prices (go, goes) up rapidly depending on the scarcity of supply.
  3. Terrorists groups (behead, beheaded) foreign journalists last year.
  4. Transport group (express, expresses) fare hike if oil prices (will continue, continues) to rise next week.
  5. Overseas workers (is expected, are expected) to increase in the coming years.
  6. Today’s youth (know, knows) the difference between real friendships from mere acquaintances.
  7. Typhoon Hayan (was, were) the most destructive typhoon last year.
  8. Merchandises from China (will continue, continue) to flock the global market.
  9. Persona non-grata (is, are) declared whenever a person / an individual utters or behaves inappropriately in a particular place or country.
  10. Global warming (become, becomes) an alarming problem worldwide.
Answer Key
  1. Have
  2. Go
  3. Beheaded
  4. Expresses
  5. Are expected
  6. Knows
  7. Was
  8. Will continue
  9. Is
  10. Becomes

Practice Quiz on Dividing Decimals

In the previous post, I have posted a quiz on multiplying decimals, let’s see what you know so far on dividing decimals.

If you have forgotten how to divide decimals, kindly read How to Divide Fractions of the Operations on Decimals Tutorial Series.

Practice Quiz on Dividing Decimals

Solve each problem and click the + sign to check your answer.

1. \displaystyle \frac{10}{0.5}

Answer
20

2. \displaystyle \frac{0.8}{0.4}

Answer
2
  » Read more

Practice Quiz on Multiplying Decimals

After taking a quiz on subtracting decimals, let’s see what you know so far on multiplying decimals.

If you forget the algorithm on how to multiply decimals, please read How to Multiply Decimals of the Operations on Decimals Tutorial Series.

Practice Quiz on Multiplying Decimals

Solve each problem and click the + sign to check your answer. No calculator please. 🙂

1. 10 \times 0.2

Answer
2

2. 0.4 \times 2

Answer
0.8
  » Read more

Practice Quiz on Subtracting Decimals

I have temporarily set aside several of the series in this blog, but I am resuming them. In this post, we start by continuing the quizzes for decimals.

If you have not learned how to do this, read How to Subtract Numbers with Decimals. The complete set of posts which includes addition, subtraction, multiplication, and division is listed in the Operations of Decimals Tutorial Series.

Practice Quiz on Subtracting  Decimals

Solve each problem and click the + sign to check your answer. No calculator please. 🙂

1. 0.8 - 0.2  » Read more

An, An, and The Quiz

We already have learned to use the articles‘a’ ‘an’ or ‘the’ . Here is a review quiz about their usage. Another quiz is also available here.

Instructions:

Fill in the blank spaces in the following sentences using either ‘a’ ‘an’ or ‘the’ where necessary. Click the + sign under each question to reveal the correct answer.

1. It was on ___________ third of ___________ month that he died.

Answer
the, the

2. ___________ Sahara is ____________ biggest desert in the world.

Answer
the, the

3. He bought __________ pair of trousers and pressed _________ pair of trousers every day.  » Read more

Area and Circumference Quiz 1

Now that we have discussed how to calculate the area and circumference of a circle, we proceed with our first quiz. The second quiz will be more on word problems. To be able to practice solving under time pressure, it is better to monitor your time. The time limit for this quiz is 12 minutes.

Area and Circumference Quiz 1

Choose the correct answer.

1. The distance around the circle is its

a.) radius
b.) area
c.) circumference
d.) diameter  » Read more

Grammar Tutorial: Subject-Verb Agreement

Subject-verb agreement:

If the subject is singular the verb should have “s” at the end. If the subject is plural there is no “s” at the end of the verb, except for the word “I” which always take the plural form of the verb.

Example: Jenna writes a poem.

In this sentence, the subject Jenna is singular, so the verb writes has “s” at the end.

Example: We visit our grandparents every Sunday.

In this sentence, the subject we is plural, so the verb visit has no “s.”

Now, it’s your turn! Choose the correct verb.  » Read more

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