Spotlight

Remember that “according to” cannot be used to talk about one's own opinion/view because it has a third person referent. We use it to talk about the evidence from someone or somewhere else or to report someone else's idea or thought, not our own.
We can say “according to him/her/you/them,” but we cannot say “according to me/us.” 
For example:

• According to me, Maria should avoid traveling because she's pregnant.✖️
• In my opinion, Maria should avoid traveling because she's pregnant.✔️

Note also that we don't use the word “opinion” after “according to.”

• According to Imran Khan, Nawaz Sharif is a criminal.✔️
• According to Imran Khan's opinion, Mr. Sharif is a criminal.✖️

Now, it's time quiz up what you have learned until now. Remember that practice is the only way to keep something in your mind forever, and quizzes help you practise in an efficient way. Don't worry about making mistakes because who doesn't make mistakes, cannot remember something for a long time.

1) According to me, I have only one heart that beats for my mother.

2) According to Aleena's opinion, Awais has two hearts.

Which of these sentences is/are correct?
Your answers: ↓ (in the comment box)

Bonus: Using Units 
For all, you Math buffs out there, always leave a space between the number and the abbreviated unit.
For instance, ‘the boat was 30 m long’ rather than ‘the boat was 30m long.’
If the number is spelled out, then we would also spell out the unit.
For instance, ‘the hole was six meters deep.’

The Oxford Comma

"Oxford comma" is also known as "serial comma." When we write a comma before the word "and" at the end of a list of different items, this is called an "Oxford comma."
Example(s):
I drink juice, tea, and coffee.