fail

　　[误] Tom failed his exam.

　　[正] Tom failed in his exam.

　　[正] Tom failed to pass the exam.

　　[析] fail为不及物动词，其后可用in加名词，或直接接不定式。

　　family

　　[误] Im sorry I have to go. Toms families are waiting for me.

　　[误] Im sorry I have to go. Toms family is waiting for me.

　　[正] Im sorry I have to go. Toms family are waiting for me.

　　[析] family是集合名词，把它当作整体看它是单数，如看作家庭中的每个成员则为复数。如：Your family are very kind to me. My family is very large.

　　far

　　[误] My school is ten miles far from here.

　　[正] My school is ten miles away from here.

　　[析] far一般不与实际距离连用。

　　[误] Did you walk far?

　　Yes，I walked far.

　　[正] Did you walk far?

　　Yes, I walked a long way.

　　[析] 一般肯定句中不用far单独作状语，而用a long way.far组成的常用词组有：as far as. ①远至，一直到。如：He walked as far as the station. ②就而言。如：As far as he was concerned these books were very good. ③只要。如：I can help you as far as I can.? so for到目前为止。例：He is very well so far.

　　farther further

　　far有两个比较级，即farther和further，其意思略有不同：farther主要用于表示距离的远近，如：Milan is farther away than Rome. 而further则是指进一步的，如：Will we need any further discussion on this matter.

　　fast

　　[误] A fast train runs fastly.

　　[正] A fast train runs fast.

　　[析] fast其形容词与副词形式相同。

　　fast soon

　　fast指行动本身的速度快，如：The foreigner speaks too fast. 而soon则多指两个动作之间间隔短，时间到来的迅速，如：She will come soon.

　　feel

　　[误] I feel badly about my mistakes.

　　[正] I feel bad about my mistakes.

　　[析] 感观动词如feel, smell等后面要接形容词而不是副词。feel good是指某人精神好，而feel well是指人身体状况良好。

　　[误] I try not to hurt her feeling.

　　[正] I try not to hurt her feelings.

　　[析] feeling在作感情讲时要用复数，而作感觉讲则要用单数。如：I have a feeling that we will win the game.

　　fail

　　[误] Tom failed his exam.

　　[正] Tom failed in his exam.

　　[正] Tom failed to pass the exam.

　　[析] fail为不及物动词，其后可用in加名词，或直接接不定式。

　　family

　　[误] Im sorry I have to go. Toms families are waiting for me.

　　[误] Im sorry I have to go. Toms family is waiting for me.

　　[正] Im sorry I have to go. Toms family are waiting for me.

　　[析] family是集合名词，把它当作整体看它是单数，如看作家庭中的每个成员则为复数。如：Your family are very kind to me. My family is very large.

　　far

　　[误] My school is ten miles far from here.

　　[正] My school is ten miles away from here.

　　[析] far一般不与实际距离连用。

　　[误] Did you walk far?

　　Yes，I walked far.

　　[正] Did you walk far?

　　Yes, I walked a long way.

　　[析] 一般肯定句中不用far单独作状语，而用a long way.far组成的常用词组有：as far as. ①远至，一直到。如：He walked as far as the station. ②就而言。如：As far as he was concerned these books were very good. ③只要。如：I can help you as far as I can.? so for到目前为止。例：He is very well so far.

　　farther further

　　far有两个比较级，即farther和further，其意思略有不同：farther主要用于表示距离的远近，如：Milan is farther away than Rome. 而further则是指进一步的，如：Will we need any further discussion on this matter.

　　fast

　　[误] A fast train runs fastly.

　　[正] A fast train runs fast.

　　[析] fast其形容词与副词形式相同。

　　fast soon

　　fast指行动本身的速度快，如：The foreigner speaks too fast. 而soon则多指两个动作之间间隔短，时间到来的迅速，如：She will come soon.

　　feel

　　[误] I feel badly about my mistakes.

　　[正] I feel bad about my mistakes.

　　[析] 感观动词如feel, smell等后面要接形容词而不是副词。feel good是指某人精神好，而feel well是指人身体状况良好。

　　[误] I try not to hurt her feeling.

　　[正] I try not to hurt her feelings.

　　[析] feeling在作感情讲时要用复数，而作感觉讲则要用单数。如：I have a feeling that we will win the game.