詞上加"-s"而犯錯(cuò)，其中"experience, equipment, evidence, information"這幾個(gè)的錯(cuò)誤最多。

　　下面一家裝修商廣告中的"experiences"(經(jīng)驗(yàn))便是一例：

　　"...our many years of reputable experiences."

　　須知，當(dāng)“經(jīng)驗(yàn)”解時(shí)，"experience"是不可數(shù)名詞，不可以有"-s"："...our many years of reputable experience(許多年聲譽(yù)卓著的裝修經(jīng)驗(yàn))"。當(dāng)“各種各樣不同經(jīng)歷”解時(shí)，"experience"是可數(shù)名詞，可以有復(fù)數(shù)"-s"的符號(hào)，如："Tom could not forget his thrilling experiences in his first trip to Guilin."

　　學(xué)生作業(yè)中，類似的錯(cuò)誤也不少，如：

　�、� A lot of factors led to students' poor performances. (應(yīng)為performance)

　　② Only people of irreproachable characters can aspire to be good leaders.(應(yīng)為character)

　�、� More and more institutions resort to advanced equipments to assist in the education process.(應(yīng)為equipment)

　�、� Without such knowledges， one would not be able to understand what was seen or heard. (應(yīng)為knowledge)

　�、� There is still much room for further improvements.(應(yīng)為improvement)

　　上述這些不可數(shù)名詞的錯(cuò)誤，是不是很熟悉呢?

　　剛剛談的錯(cuò)誤是不可有"-s"而用"-s"。另一種錯(cuò)誤是應(yīng)該有"-s"而不用"-s"。雖然后者不像前者這樣麻煩，但是也不難看到。下面三個(gè)不同的廣告中便出現(xiàn)了應(yīng)該有"-s"但漏了"-s"的名詞：

　　⑥"We are looking for suitable candidate to take up the following positions."(應(yīng)為candidates)。

　　⑦"Dear customer: Have you been misled by too many brochure?"(應(yīng)為brochures)。

　　⑧"We specialise in rubber tile for factory, office, warehouse, etc."(應(yīng)為rubber tiles, factories, offices, warehouses)

　�、�-⑧里的錯(cuò)誤顯而易見，只要稍微小心，便不難發(fā)現(xiàn)而改正過來。但是，有關(guān)不可數(shù)名詞加"-s"的錯(cuò)誤，則較難躲閃，必須加倍警惕才好。其中一個(gè)防患辦法是借重量詞，反映不可數(shù)名詞之“量” ，但不改變其形，即不要用"-s"，如：

　　⑨ There isn't much petroleum in the car.

　�、� John gave some evidence to indicate that the documents had been tampered with.

　　11. A little knowledge is a dangerous thing.

　　12. A lot of money has been donated to various charity organisations.

　　13. Some people today paid little attention to their extravagant acts.