●說明原因的句型:
    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…
    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
    es 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