（以下各例中，a）表示錯誤的或不宜提倡的句子，b）表示正確的或值得模仿的句子。）

2．主語和謂語，名詞和代詞，以及人稱是否保持一致

a) The eating habit of Chinese people have changed in the past decade.

　　b) The eating habit of Chinese people has changed in the past decade.

　　不管主語和謂語隔開多遠，主語當中還有修飾成分，謂語要和真正的主語在數上保持一致。

a) Now fruits and vegetables can be seen everywhere when it is in season.

b) Now fruits and vegetables can be seen everywhere when they are in season.

a) I feel proud to come to our university.

b) I feel proud to come to this university

our和主語 I不一致，或把 our改成 my，或改成 this。而這里用 this 較妥。

3．修飾語是否放在正確的位置上

a) Without television, people can't get information which comes from other parts of the world immediately.

b) Without television, people can't immediately get information which comes from other parts of the world.

a句子，immediately 顯然放錯了位置。是“得到迅速從各地傳來的消息”，還是“迅速得到從各地傳來的消息”？意思含糊不清。

a) At the age of six, my father began to give me English lessons.

b) When I was six years old, my father began to give me English lessons.

a句子，At the age of six 放在這個位置上，變成了“我父親六歲的時候”。改變說法，可以解決這個問題。

a) To improve one's writing skill, regular practice is necessary.

b) To improve one's writing skill, one must make regular practice.

不定式短語的邏輯主語決不是regular practice，為了把邏輯關系表達清楚，要么把不定式短語改成If one wants to improve his writing skill，要么把主句改成one must make regular practice。