语法是我的弱项，有谁能帮我分析一下啊，这几道题目，谢谢了。

1.Oceans continually lose by evaporation much of the river water_____
A  to constantly flow into them     B is constantly flowing into them  C   constantly flows into them   D  constantly flowing into them
根据黄金规则一（一个句子只能有一个谓语），显然先把B、C排除；另外就是by在TOEFL语法中永远是作为Prep使用，介词后面必须有宾语。

2,_Although __there are more than 2,ooo different __variety___ of candy, mang  of them are made from a __basic___ boiled mixture __of__ sugar ,water ,and corn syrup.
variety是可数的，看到前面2000就知道，应改为varieties

3，_To__ convert an angle measured in radians __for___ an equivalent angle measured in degrees ,multiply ___the number___ of radians __by__ 57.296.
固定搭配：convert...into...

4， Human is formed (during) soil microorganisms decompose (animal  and plant) material into (elements) usable by (plants).
during 在TOEFL中是作为介词使用，介词后面不能有一个独立的句子，但是该改为什么我也不太确定。
5 Ozone is (an) unstable ,(faintly) bluish gas (that) is the most (chemical)  active form of oxygen.
chemical-chemically,修饰后面的active,副词修饰形容词嘛！！

Long (before) his death ,John Dewey (saw) his philosophy have a profound (influences) on education and thought in the United States (and) elsewhere.

“a+复数名词”永远错误

1.flowing into them是分词作后置定语修饰river water的，副词constantly则修饰flowing。

4.应该是将during改成when吧，Human is formed是一个完整的主句，后边只能接从句，dring是介词，不能引导时间状语从句。