Linking Arguments

First of all, I think ...

Not only that, but I also think that ...

Not only are they ..., they are also ...

They are not ..., nor are they ...

There are various/several/many reasons for this.

First, ... / Firstly, ...

Second, ... / Secondly, ...

Moreover, ... / Furthermore, ... / In addition, ...

Another significant point is that ...

Finally, ...

On the one hand, ... On the other hand, ...

In contrast to this is ...

Because of ...

That is why ...

After all, ...

The reason is that ...

In that respect ...

The result of this is that ...

Another aspect/point is that ...

It is because ...

Although it is true that ... it would be wrong to claim that ...

That may sometimes be true, but ...

One could argue that ..., but ...

Providing Examples

Take for example (the case of) ...

Look at ...

For instance ... / For example ...

Let me give you an example.

Additions and Conclusion

Most probably ...

It appears to be ...

It is important to mention that...

As I already indicated ...

In other words, ...

I am most concerned about ...

I should like to repeat once again that ...

I should like to emphasise that ...

I would (just) like to add ...

So all in all I believe that...

(In) summing up it can be said that ...

Weighing the pros and cons, I come to the conclusion that ...