Hello! Welcome back to our course.
In our last lesson, you learned how to state your opinion politely and professionally using phrases like "I think..." and "I'm convinced that...". We also touched on a simple three-part structure for making your point: 1. State your opinion, 2. Explain why, and 3. Conclude.
Today, we're going to focus on that critical second step. Just having an opinion isn't enough; to be persuasive in a professional setting, you must be able to support it. This lesson will teach you how to provide a reason or an example to support your stated opinion. By the end of our session, you'll be able to build a logical and convincing argument to back up your ideas in any meeting.
1. The Foundation: Giving a Reason with "Because" and "Since"
The most direct way to support an opinion is to give a reason. The words you use to connect your opinion to your reason are called "connectors" or "conjunctions." The most important ones are because, since, and due to.
Let's watch a short video that explains how to use these essential connectors.
The Best Professional Connectors to Explain Your Opinions in English
The video 'The Best Professional Connectors to Explain Your Opinions in English' from the Speak Confident English channel clearly explains how to use connectors to give a reason. Pay close attention to the examples for 'because', 'since', and 'due to'.
Please watch from 04:46 to 08:27. This section covers the most common words for explaining the 'why' behind your opinion.
As the video explained, these words have slightly different uses:
- Because: The most common and direct way to give a reason.
- Example: "I think we should replace the LNB on this satellite dish because it's over ten years old."
- Since: Use this when the reason is already known or obvious to the listeners.
- Example: "Since the customer is reporting intermittent signal loss, we should check the cable connections first."
- Due to / Because of: These are more formal and are followed by a noun or noun phrase, not a full sentence.
- Example: "The installation was delayed due to bad weather." (Correct)
- Example: "The installation was delayed because of the storm." (Correct)
- Incorrect: "The installation was delayed
due to it was raining."
The image below provides a great summary of these phrases and more.

Test your understanding!
You are in a team meeting. You want to suggest using a specific brand of diagnostic tool. Complete the sentence below with a reason, using one of the new connectors.
"In my opinion, we should purchase the Sat-Pro diagnostic tool..."
Show answer
Here are a few possible answers:
- "...because it provides more accurate readings for signal strength."
- "...since our current tools are not compatible with the new satellite models."
- "...due to its superior durability in outdoor conditions."
2. Making Your Reason Stronger: Providing an Example or Evidence
A reason explains why you have an opinion. An example or piece of evidence shows proof and makes your argument much more credible. This is especially important in technical discussions.
A simple and effective structure for this is the PREP method:
- Position: State your opinion.
- Reason: Explain why you think that.
- Evidence: Give a specific example or data.
- Position: Restate your opinion to conclude.
Let's focus on the "E" for Evidence. The most common phrases to introduce an example are for example and for instance.
The PREP Method of Communication
The video 'The PREP Method of Communication' by Beautiful British English explains this structure well. We will focus on the 'Evidence' part to see how to add an example.
Watch the section from 02:40 to 03:31. Notice how he adds a specific example to make his point stronger.
Let's build on our previous example:
- Position: "I think we should replace the LNB on this satellite dish."
- Reason: "...because it's over ten years old and likely causing the signal degradation."
- Evidence: "For example, we serviced a similar system last week with the same issue, and a new LNB fixed it immediately."
- Position: "That's why I'm confident that replacing the LNB is the right solution here."
This is much more persuasive than just saying "I think we should replace the LNB."
Here are some phrases you can use to introduce examples.

3. Building a Complete Argument
Now let's put it all together. You can use the PREP method as a mental guide to structure your thoughts before you speak. You can also strengthen your argument by providing more than one reason.
Let's watch two final clips. The first shows how to add more reasons, and the second shows the full PREP method in action.
The Best Professional Connectors to Explain Your Opinions in English
First, let's return to the 'Speak Confident English' video to learn phrases for adding more than one reason.
Watch from 12:45 to 15:28. This section covers phrases like 'Another reason is...' and 'On top of that...'
The PREP Method of Communication
Now, let's watch the full PREP method explained to see how Position, Reason, and Evidence work together.
Watch from 00:17 to 02:40 and then from 03:31 to 04:23. This will give you the complete framework for structuring your opinion.
Let's see this in a work scenario for a SAT technic consultant:
Scenario: Your team is discussing whether to switch to a new, more expensive type of coaxial cable for installations.
- (P)osition: "I strongly believe we should switch to the new quad-shielded coaxial cable."
- (R)eason 1: "The main reason is that it offers much better protection against signal interference."
- (E)vidence 1: "For instance, in urban areas with a lot of radio frequency noise, our current cables often lead to customer complaints about poor picture quality."
- (R)eason 2: "On top of that, the new cable is more durable and has a longer lifespan."
- (E)vidence 2: "The manufacturer's data shows it can withstand harsh weather for over 15 years, which is 5 years longer than our current cable. This means fewer service calls for us in the long run."
- (P)osition: "So, although it's more expensive initially, I'm convinced it will improve customer satisfaction and save us money over time."
4. Practice Scenario
Now it's your turn to build a complete argument.
Situation: In a team meeting, a colleague suggests that to save time, technicians should stop providing a basic system tutorial to new customers after an installation. You disagree.
Use the PREP structure to form your argument. State your opinion (you disagree), give a reason, and provide an example.
Show suggested answer
Here is one possible way to structure your response:
- (Position): "I see your point about saving time, but I think we should continue providing the tutorial to customers."
- (Reason): "Because if customers don't understand how to use the basic functions, it actually creates more work for us later."
- (Evidence): "For example, last month we had about ten support calls that were just about how to switch inputs or access the channel guide. These calls could have been avoided with a two-minute tutorial at the time of installation."
- (Position): "So, for that reason, I think keeping the tutorial is more efficient in the long run."
Conclusion
Excellent work! Today you've moved from simply stating an opinion to building a logical, evidence-based argument. This is a powerful skill for being respected and influential in professional discussions.
Key Takeaways:
- Always support your opinion with a reason. Use connectors like
because,since, anddue to. - Make your reason more powerful with a specific example or piece of evidence. Use phrases like
for exampleorfor instance. - Use a clear structure like PREP (Position, Reason, Evidence, Position) to organize your thoughts.
- To make your argument even stronger, add more reasons using phrases like
in additionoranother reason is....
Preview of the Next Lesson:
Now that you can confidently express and support your own opinions, the next step is to interact with the opinions of others. In our next lesson, we will learn how to use expressions for agreeing with a colleague's point, such as "I agree" and "That's a good point." This will help you build positive relationships and contribute constructively in team discussions.