Gogo 發問時間： 社會與文化語言 · 8 年前

# 請問這二題可以填入什麼字?

1. Horseshoes Falls is the most powerful waterfall in North America, _____ measured by vertical height and also by flow rate.

2. Methane produced by the action of water on hot carbon bearing rocks, _____ occurs in volcanic regions on Earth, is the alternative explanation.

### 2 個解答

• ?
Lv 7
8 年前
最佳解答

Both sentences shall use "as" for the blanks.

These two sentence are from the following links:

1.

http://en.wikipedia.org/wiki/Niagara_Falls

(in the 3rd paragraph)

(the 5th paragraph under the photo).

Here, using "as" is the same as "when it". In fact, it shall be "as it". However, since "it" obviously represent "Horseshoes Falls" and "Methane" respectively, so it was omitted.

As for "hot carbon bearing rocks", you shall take "hot" out of context first to understand it. "carbon bearing rocks" means "rocks that contain carbon". Since they are out of volcano, so it is HOT.

2012-11-19 12:37:13 補充：

1.

(the FOURTH line in the third paragraph)

2012-11-19 12:39:06 補充：

typo!

since "it" obviously represent ... ==> "it" obviously represents ...

I use "so" at the end, it is better not to use "since".

2012-11-19 12:47:46 補充：

You can also treat "as" as "as (when it)" or "like (when it)". It means, instead of using a relative clause, it uses a preposition phrase.

參考資料： self
• ?
Lv 7
8 年前

1. Horseshoes Falls is the most powerful waterfall in North America, _____ measured by vertical height and also by flow rate.

可以加上while來連接。

While (he was) fighting in Germany, he was taken prisoner.

當副詞子句的主詞和主要子句相同時，可以省略。

本句也是省略狀況：... while (Horseshoes Falls is) measured by ...

2. Methane produced by the action of water on hot carbon bearing rocks, _____ occurs in volcanic regions on Earth, is the alternative explanation.

本句的主要子句是Methane is the alternative explanation。所以兩個逗號之間的應該是一個非限定性質的關係子句，所以可加入which來當子句的主詞。

hot carbon-bearing rocks = 那高溫且含有碳元素的岩石

carbon-bearing是名詞＋分詞的複合形容詞，放在名詞前當修飾語時，應加連字號在兩個字的中間。

2012-11-19 12:40:14 補充：

第二句裡的普通名詞methane己經受到分詞片語produed by ...的限定，就不能再用關係子句加以限定，所以關係子句加上逗號，表示屬於［非限定］性質。