Write three supporting details (major details) for each topic sentence.

3. Topic sentence: Smartphones are useful in our studies

Supporting Detail 1:

Besides making phone calls, nearly all smartphones today can natively provide directions through GPS, take pictures, play music and keep track of appointments and contacts

Supporting Detail 2:

martphones are useful for everyday life but they are ... It's important to identify the key issues in the essay question

Supporting Detail 3:

that smartphones can easily be used in various studies ... The topic is understandable by majority

4. Topic sentence: Teachers function as parents in school.

Supporting Detail 1:

But on the other hand, teachers play the role of second parents to the pupils.

Supporting Detail 2:

Many believe that the teachers' primary role is to teach children to behave and to judge what is right and wrong

Supporting Detail 3:

It is they who correct the pupils if something went wrong like what they do on their own children.

5. Topic sentence: Using the light-rail (LRT) for commuting is practical.

Supporting Detail 1:

Each day, millions of commuters, tourists and students rely on regional rail transit as their primary source of transportation to and from city

Supporting Detail 2:

Light rail transit (LRT) is a form of passenger urban rail transit characterized by a combination of tram and metro features.

Supporting Detail 3:

congestion in American cities both with and without light-rail transit has steadily increased