2.it is true that (true, /to be sure, /admittedly,)…, but this is not to say (it is unlikely /it doesn’t follow/it doesn’t mean/it won’t be the case) that…

3.it would be possible (natural/reasonable) to think (believe/take the view) that…, but it would be absurd (wrong) to claim (argue) that…

4.there is absolutely (in fact) no (every) reason for us to believe (accept/resist/reject) that…

5.the danger (problem/fact/truth/point) is that…

6.i believe that the title statement is valid because (of)…

7.i agree with the above statement because i believe that…

8.although i appreciate that…, i cannot agree with the title statement.

9.now it is commonly (widely/generally/increasingly) believed (thought /held/accepted/felt/recognized/acknowledged) that… but i wonder (doubt) whether…

10.the increase (change/failure/success) in…mainly (largely/partly) results from (arises from/is because of)…

11.there are many (different/several/a number of/a variety of) causes (reasons) for this dramatic (marked/significant) growth (change/decline/increase) in… first, … second, …finally,…

12.another reason why i dispute the above statement is that…

13.there are numerous reasons why…, and i shall here explore only a few of the most important ones.

二、不同文体写作常用套语

例：议论文的常用套语

as is known to all, it is important to be/do …

i think there are at least two reasons for …

for one thing,… for another , …

let’s take … for example …

from what i have mentioned above we can see that without … we cannot …

it is clear that,… plays an important part in …

it is because … that …

different people, however , have different opinions on this matter .some people think that …

others argue that …

according to them, all of us should …

in their opinion, nobody can … without…

compared with …, … has a lot of advantages over …

there is no doubt that …

in short (in brief /in a word), i firmly support the view that …

so my conclusion is that …