2)第二段：

　　(1) 原因列举：教材45页“用于解释原因的语句”

　　IV.用于解释原因的语句

　　1. The phenomenon/change in ... mainly the fact that ...

　　2. One may regard the phenomenon as a ... 3. There are many for this dramatic growth/decrease. First, ... Second, ... Finally, ...

　　4. A number of factors can account for the change in ...

　　5. Another contributory factor of ... is ...

　　6. Why ...? Perhaps the primary reason is ....

　　7. ... is also responsible for the in ...

　　(2) 观点陈述：教材43页“用于比较、驳斥的语句”

　　I.用于比较的语句

　　1. The advantages of A outweigh any benefit we gain from B.

　　2. Good as A is, it has its own disadvantages. For one thing, it ...; for another, it ....

　　3. Although A has advantage over B ..., it can not compete with B in ...

　　4. A's advantage when B's advantages are considered.

　　II.用于驳斥的语句

　　1. Although a lot of people believe that ..., I whether the argument bears

　　2. As opposed to widely held ideas, I that ...

　　3. Although the popular is that ..., (a) current indicates that ...

　　4. They may be right about ..., but they seem to to the fact that ...

　　5. Although it is widely accepted that ..., it is unlikely to be true that ...

　　6. It is true that ..., but that ...

　　7. There is/are reason(s) for us to that ...

　　8. What these people fail to is that ...

　　9. may that .... It probably will. But ...

　　10. It is one thing to believe that ..., but it is quite another to say that ...

　　3)第三段：教材46页“用于文章结尾的语句”

　　VI. 用于文章结尾的语句

　　, we may safely draw the conclusion that ....

　　2. All the evidence supports an unshakable conclusion that ....

　　3. It is (high) time that we placed great emphasis on ....

　　4. It is (high) time we put an end to the undesirable phenomenon of ....

　　5. There is that further attention must be paid to the problem of ....

　　6. It is necessary that effective actions should be taken to prevent the situation.

　　2、经典范文：

　　1)教材11页：1

　　2)教材18页：18

　　四级作文范文选

　　(供学生参考背诵)

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