【題目】He has been ill for several weeks, so he has ________ in learning Maths.

A.many difficultiesB.some difficultyC.a lot of troublesD.a trouble

【答案】A

【解析】

句意：他已經(jīng)病了幾個星期了，所以學(xué)習(xí)數(shù)學(xué)有一些困難。

考查名詞復(fù)數(shù)。difficulty困難，表示具體意義的“困難”(如難事、難點、難題等)，是可數(shù)名詞。例如：He paused as if he found a difficulty.他停下來，好像遇到了一個難點。He met with many difficulties when travelling.他在旅行進遇到過不少傷腦筋的事；表示抽象意義的“困難”，是不可數(shù)名詞。如：Bad planning will lead to difficulty later.計劃不周會給以后帶來困難；trouble可以作可數(shù)名詞，也可以作不可數(shù)名詞。作具體的某件麻煩事情時是可數(shù)；作一般的麻煩，困難時是不可數(shù)。根據(jù)空格前后單詞，很容易想到have difficulty in doing sth故排除選項C和D；句子說的是：在學(xué)習(xí)數(shù)學(xué)上遇到很多問題，可知這些問題指的是具體的問題，所以要用復(fù)數(shù)形式。所以排除B而選A。故選A。

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