Moderate opinions:
• Personally, I think that …
• It seems to me that …
• I must admit that …
• I believe/suppose that …
• I cannot deny that …
• As I see it, …
• As far as I’m concerned, …
• I would argue that …
• I’d like to point out that …
• In my experience, …
Very strong opinions:
• I am sure that …
• I am convinced that …
• I am certain that …
Example: I would argue that computers are rather beneficial for kids.

• to attest, …
• to prove, …
• this (fact) is attested/proven by …
• this (fact) is evidenced by …
• this (fact) is testified by …
• this (fact) is endorsed/supported by…
• this (evidence) establishes that …
Example: Consuming moderate amounts of sweets can be good for health. This is evidenced by a number of cases when people improved their health conditions by eating chocolate.

• It is (generally) claimed that …
• It is (generally) said that …
• It is (generally) thought that …
• It is (generally) considered that …
• A common opinion is that …
• A popular belief is that …
Example: It is considered that rigorous diets are very unhealthy.

• The fact is that …
• It is obvious that …
• It is clear that …
• There is no doubt that …
• This proves that …
Example: It is obvious that deforestation has no positive effects.

• Generally speaking, …
• On the whole, …
• Typically, …
• By and large …
Example: Generally speaking, smoking is a bad habit.

• For example, …
• For instance, …
• A good illustration of this is …
• Evidence for this is provided by …
• We can see this when …
Example: A lot of wild animals are endangered. Evidence for this is proved by decreasing number of species.

• To summarize, …
• In conclusion, …
• Overall, …
• On balance, …
• Taking everything into consideration, …
Example: Overall, no parents should neglect their children.