PREP07SC1T88

百小合

A recent study has found that amoxicillin, long a standard treatment for ear infections, is about as effective as newer, more expensive antibiotics and causes fewer side effects.
标红的部分是并列的，但是中间那个“more exspensive antibiotics”后面不用加逗号么？

movcn

句子的结构是 A recent study has found that amoxicillin... is about as effective..... and causes....整个句子完整。如果加了逗号容易引起歧义--是amoxicillin还是study引起了FEWER SIDE EFFECTS?

百小合

句子的结构是 A recent study has found that amoxicillin... is about as effective..... and causes....整个句子完整。如果加了逗号容易引起歧义--是amoxicillin还是study引起了FEWER SIDE EFFECTS?

-- by 会员 movcn (2012/4/6 0:23:23)

那如果在这个句子中想表达：
A study has found that。。。和这个study也cause了某结果，要怎么安排第二个动词呢？

movcn

句子的结构是 A recent study has found that amoxicillin... is about as effective..... and causes....整个句子完整。如果加了逗号容易引起歧义--是amoxicillin还是study引起了FEWER SIDE EFFECTS?

-- by 会员 movcn (2012/4/6 0:23:23)

那如果在这个句子中想表达：
A study has found that。。。和这个study也cause了某结果，要怎么安排第二个动词呢？

-- by 会员 百小合 (2012/4/6 0:29:32)

1, comma+gerund
A recent study has found that amoxicillin... is about as effective....., causing .....


2, parallelism
A recent study has found that amoxicillin... is about as effective....., and has caused....


3, appositive
A recent study has found that amoxicillin... is about as effective....., a study that causes....

百小合

大牛啊~一语点醒了我~那就再为我解答下疑惑吧~感激不尽~~~~

158.(33377-!-item-!-188;#058&006720)

The largest trade-book publisher in the United States has announced the creation of a new digital imprint division, under which it will publish about 20 purely digital works to be sold online as either electronic books or downloadable copies that can be printed upon purchase.

(A) works to be sold online as either electronic books or

(B) works to sell them online, either as electronic books or

(C) works and it will sell them online as either electronic books or as

(D) works, and selling them online as either electronic books or as

(E) works, and it will sell them online either as electronic books or

答案是A

对于C，笔记上的解释是：不加逗号的and it will sell中的it多余。所以我就搞不太清楚这种加不加逗号对一个句子有什么区别么？

百小合

句子的结构是 A recent study has found that amoxicillin... is about as effective..... and causes....整个句子完整。如果加了逗号容易引起歧义--是amoxicillin还是study引起了FEWER SIDE EFFECTS?

-- by 会员 movcn (2012/4/6 0:23:23)

那如果在这个句子中想表达：
A study has found that。。。和这个study也cause了某结果，要怎么安排第二个动词呢？

-- by 会员 百小合 (2012/4/6 0:29:32)

1, comma+gerund
A recent study has found that amoxicillin... is about as effective....., causing .....


2, parallelism
A recent study has found that amoxicillin... is about as effective....., and has caused....


3, appositive
A recent study has found that amoxicillin... is about as effective....., a study that causes....

-- by 会员 movcn (2012/4/6 0:39:03)

大牛啊~一语点醒了我~那就再为我解答下疑惑吧~感激不尽~~~~

158.(33377-!-item-!-188;#058&006720)

The largest trade-book publisher in the United States has announced the creation of a new digital imprint division, under which it will publish about 20 purely digital works to be sold online as either electronic books or downloadable copies that can be printed upon purchase.

(A) works to be sold online as either electronic books or

(B) works to sell them online, either as electronic books or

(C) works and it will sell them online as either electronic books or as

(D) works, and selling them online as either electronic books or as

(E) works, and it will sell them online either as electronic books or

答案是A

对于C，笔记上的解释是：不加逗号的and it will sell中的it多余。所以我就搞不太清楚这种加不加逗号对一个句子有什么区别么？



话说我不太会发帖回复什么的 不知道点了回复你能不能看到 so 再引用一下~

movcn

大牛啊~一语点醒了我~那就再为我解答下疑惑吧~感激不尽~~~~

158.(33377-!-item-!-188;#058&006720)

The largest trade-book publisher in the United States has announced the creation of a new digital imprint division, under which it will publish about 20 purely digital works to be sold online as either electronic books or downloadable copies that can be printed upon purchase.

(A) works to be sold online as either electronic books or

(B) works to sell them online, either as electronic books or

(C) works and it will sell them online as either electronic books or as

(D) works, and selling them online as either electronic books or as

(E) works, and it will sell them online either as electronic books or

答案是A

对于C，笔记上的解释是：不加逗号的and it will sell中的it多余。所以我就搞不太清楚这种加不加逗号对一个句子有什么区别么？

-- by 会员 百小合 (2012/4/6 0:57:37)

同一个clause中，不需要重复主语，这时候AND作为平行关系的连接。


It will publish books and  will sell them online. (平行）


如果用COMMA断开，两个单独的CLAUSE需要有各自完整的主语和谓语，并且要有连接词（如AND）连接，以免造成RUN-ON SENTENCE


It will publish books, and it will sell them online. （两个单独的从句，用AND连接）