1.Because he was ill yesterday，so he didn't go to work. (×)

　　Because he was ill yesterday，he didn't go to work. (√)

　　He was ill yesterday，so he didn't go to work. (√)

　　[析] 用though，but表示"雖然……，但是…… "或用because，so 表示"因為……，所以……"時，though和but 及because和so 都只能擇一而用，不能兩者同時使用。

　　2.The Smiths have moved Beijing. (×)

　　The Smiths have moved to Beijing. (√)

　　[析] 不及物動詞后接名詞或代詞作賓語時，要在動詞之后加上適當(dāng)?shù)慕樵~;但不及物動詞后接home，here，there等副詞作賓語時，動詞之后不必加任何介詞。

　　3.The box is too heavy for him to carry it. (×)

　　The box is too heavy for him to carry. (√)

　　[析] the box既是這句話的主語，也是不定式to carry的邏輯賓語，若句末再加上it，就和the box重復(fù)了。

　　4.Each of the boys have a pen. (×)

　　Each of the boys has a pen. (√)

　　[析] 復(fù)數(shù)名詞前有表個體的each of，one of，every，either of等詞組修飾，或有表否定的neither of，none of 等詞組修飾時，謂語動詞要用單數(shù)形式。

　　5.例：那是你心軟!我不就是一個例子嗎?

　　Neither he nor you is good at English. (×)

　　Neither he nor you are good at English. (√)

　　[析] either…… or……，neither…… nor……，not only……，but also……等詞組連接句子的兩個主語時，謂語動詞遵循"就近一致原則"，即由靠近謂語的那個主語決定謂語的人稱和數(shù)用何種形式。

　　6.Ten minus three are seven. (×)

　　Ten minus three is seven. (√)

　　[析] 用英語表示加(plus)、減(minus)等數(shù)學(xué)運算時，謂語動詞也用單數(shù)形式。

　　7.The number of the workers in this factory are about 5,000. (×)

　　The number of the workers in this factory is about 5,000. (√)

　　[析] the number of表示"……的數(shù)量"，謂語動詞用單數(shù)形式;a number of 的意思是"若干"或"許多"，相當(dāng)于some或a lot of，和復(fù)數(shù)名詞連用，謂語動詞用復(fù)數(shù)形式。

　　8. 例. Hello! I have important something to tell you. (×)

　　Hello! I have something important to tell you. (√)

　　[析] 形容詞或動詞不定式修飾不定代詞作定語時，修飾成分要置于不定代詞之后。

　　9. His son is enough old to go to school. (×)

　　His son is old enough to go to school. (√)

　　[析] enough作形容詞修飾名詞時，可以放在名詞前，也可放在名詞后;作副詞修飾形容詞或副詞時，只能放在形容詞或副詞之后。

　　10.. Here is your sweater, put away it.(×)

　　Here is your sweater, put it away. (√)

　　[析] put away, pick up, put on等"動詞+副詞"構(gòu)成的詞組后接代詞作賓語時，代詞只能放在動詞和副詞之間。