說(shuō)明原因的句型：
1) there are some/two/many good reasons for.../to do...
2) We have two good reasons for...
3) the reason for ... is that + 從句
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...
1) there are some/two/many good reasons for.../to do...
2) We have two good reasons for...
3) the reason for ... is that + 從句
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...