说明原因的句式:

1) There are some/two/many good reasons for.../to do...

2) We have two good reasons for...

3) The reason for ... is that + 从句

4) Among the most convincing reasons given by people for..., one should be mentioned...

5) One may think of the trend as a result of...

6) The change in... largely results from the fact that...

7) There are several causes for this significant growth in... irst...

8) A number of factors could account for the ....

9) It is no simple task to give the reason for ...

10) The cause of /reason for higher prices was an increase in demand.

11) Because/As/Now that/Since the demand has increased, the prices are higher.

12) An increase in demand causes/results in/leads to/produces higher prices.

13) The demand has increased.

14) Therefore,/As a result,/For this reason,/Because of this,/Consequently, the prices are higher.

15) If there is an increase in demand, then prices rise./go up. /boost./are higher.

16) Different people look at...in different ways...

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