英语语法 名词 I don't have any ____ with spoken English,but I often meet with ____ in English grammar.A.difficulties...difficultyB.difficulty...difficultiesC.difficulty...difficultyD.difficulties...difficulties为什么答案是BThey stored ____ food and water in the cave to prepare for the worst.A.large quantities ofB.a great manyC.a plenty of D.quite a lot为什么答案是A而不是C?

1.前一个空表示抽象的“困难”，是不可数名词。后一个空表示具体的“难事”，是可数名词。
2. A、C都可以接不可数名词，但A还可以接可数名词。food和water都是不可数名词，但这里两词连用，则含有种类的意思，food and water总体上讲具有复数的特征。所以A是最佳答案。

1.There _ no life on the moon. A. is said to have B. are said to have C. is said to be D. are said to be 选C there be句型 2.

1.have difficulty in doing sth或with sth是固定短语,这里的difficulty泛指“困难”,不需复数.而第二个空前面的meet with有“碰见,遇到,经受,符合”的意思,是说在英语语法方面经常碰到难点,这里的难点不止一次碰到,应该用复数.
2.plenty of前面不用加a.
quantity应用时有两种：a large quantity of或large quantities of.意思都是“大量”.
a lot 后面应该加of
a great many 修饰可数名词.