How to write a good topic sentence (examples and exercises)

Hi everyone! after I've published some grammar lessons previously,today's article is about writing.

Writing a good topic sentence,I'm going to share with you what I've Learned from my professor of writing, a topic sentence is the key to start writing a good paragraph.

Topic Sentences 
Firstly wondering about some questions :
What is a topic sentence ?
What does it do?
How I can write one?

The topic sentence is the first sentence in a paragraph,it introduces the main idea of the whole paragraph,and to write your own you should summarize the main idea of your paragraph,for the purpose of reminding the reader of what's the paragraph is about. 

A good topic sentence should include either of the following :
- One clear topic
Weak : It's important to have friends,and also to do well in school.
Strong : I don't think I will ever have a better friend than Heather.

- An opinion or idea about the topic
Weak : I have been studying karate.
Strong : studying karate has given me strength and self-confjdence.

- A good topic sentence should NOT be :
- Too broad (too much to write about)
Weak : Australia is an interesting country.
Strong : on my visit to Australia, I saw many unusual animals.

- Too marrow ( not enough to write about )
Weak : school starts at 8:30 a.m
Strong : getting ready for school in the morning is more difficult than any of my classes.

Topic sentence exercises :
Choose the best topic sentence for each group of supporting sentences. Write it on the line provided.
1.)_________________________________________________. North Americans send cards for many occasions. They send cards to family and friends on birthdays and holidays. They also send thank-you cards, get well cards, graduation cards, and congratulation cards. It is very common to buy cards in stores and send them through the mail, but turning on the computer and sending cards over the Internet is also popular.

a) Sending cards is very popular in North America.
b) Birthday cards are the most popular kind of card.
c) It is important to send thank-you cards.
2.) ________________________________________ .First of all, we need money to repair old roads and build new roads. We also need more to pay teachers’ salaries and to pay for services such as trash collection. Finally, more tax money is needed to give financial help to the poor citizens of the city. It is clear that the city will have serious problems if taxes are not raised soon.
a) We should raise city taxes.
b) City taxes are too high.
c) City taxes pay for new roads.
3.)_________________________________________For example, a person can have breakfast in New York, board an airplane, and have dinner in Paris. A businesswoman in London can instantly place an order with a factory in Hong Kong by sending a fax. Furthermore, a schoolboy in Tokyo can turn on a TV and watch a baseball game being played in Los Angeles.
a) Airplanes have changed our lives.
b) Advances in technology have made the world seem smaller.
c) The fax machine was an important invention.
Add your answer on comment. (Good luck)
Finaly,I hope you've enjoyed this lesson of how to form a topic sentence in English :)

Modal verbs examples and how to use them in a sentence.

Hi guys! and welcome in the first lesson on our blog http://www.learnenglish-quickly.blogspot.com/,this post as you can see is about the modal verbs : Can - Could - May - Might

So,let's have a look at the formulation and then we will move to the usage of modal verbs ! : Can,Could,May,and Might.

Modal Verbs :
Can - Could - May - Might
let's start with formulation :
All modal verbs have the following features in common :
  •  They are always followed by the 'infinitive without to'
  •  The are the same for all pronouns.
  •  They do not need auxiliaries.They take direct negative and question forms. 
  • They never combine with another modal verb. 
There is some common formulation mistakes :
* very common mistake is using an infinitive with 'to' after modal

 - I can to swim. - I can to swim.
- She could running fast. -  She could running  run fast.

*Second common mistake is conjugating for he,she,it adding 's' to your verb,remember that modal verbs are the same for all for pronouns.

- She cans sleep. - She cans sleep.
- It mights rain. - It mights rain.

* the third category of mistakes is using an auxiliary with the modal verb,modal verbs takes direct question and negative forms.

 1- question
- Do you can do this ? - Can you do this ?
2- Negative
- He doesn't may love it. - He may not love it.

*and finally as we just said modal verb do not combine with other.let's see this sentence we can just keep the modal verb can,or use a synonym for can and keep will.

- She will can come tomorrow. - She Will can come tomorrow.
                                                 - She will be able to come tomorrow.
Next : usage of each of this modal verbs Click here