英語的實詞不但多義，而且同一詞還可以屬一種以上的詞類。此外，從一種詞類又可以轉化為另一種詞類，其中以⒈名詞轉化為動詞、⒉動詞轉化為名詞以及⒊形容詞轉化為動詞，這三種最為普遍、最為生動。轉化后的詞具有該詞基本的特性，因此轉化名詞有如真正名詞，轉化動詞就像真正動詞。

　　⒈名詞動詞

　　① The workers found Bobs attitude hard to stomach.

　　② The parachutist had to nerve himself for the jump from his helicopter.

　　③ A few poor children had been dogging the tourists for some time.

　　④ Tuition schools have mushroomed for the last two years.

　　⑤ The traitor was knifed and stoned to death.

　　⑥ I leafed through a few pages of the book to see what it was about.

　　⑦ Personality clashes surfaced among some rival leaders.

　　⑧ Tom elbowed his way through the crowd.

　　⑨ It is impolite to ape ones superiors.

　　⑩ Delicious food made our mouths water.

　　⒉動詞名詞

　　① The innocent girl was having a good cry.

　　② Active people are always on the go.

　　③ I often have a quiet read before going to bed.

　　④ People from all walks of life condemned a bad government.

　　⑤ Famine came in the wake of the drought.

　　⑥ The manager gave some lazy workers the sack.

　　⑦ Let me take a good look at these photos.

　　⑧ A visit to the Jurong Bird Park is a must for any tourist.

　　⑨ War is loathed by the haves and the have-nots.

　　⑩ If you have anything to discuss with me, dont hesitate to give me a ring.

　　⒊形容詞動詞

　　① Dont idle away your precious time.

　　② Fathers hair begins to grey.

　　③ How to quiet a fretful child?

　　④ We have no intention of seeing an innocent person humbled.

　　⑤ Something must be done to better the life of the underprivileged.

　　⑥ Language skills can be perfected by constant practice and regular reinforcement.

　　⑦ The robber wanted his victim to empty his pockets.

　　⑧ When the enemys ships neared the land, our soldiers began to attack.

　　⑨ The mans muscles tensed as he saw the snake approaching him.

　　⑩ The hot weather soured the fresh milk.

　　此外，有些形容詞和其他詞類也可以轉化為名詞。例如：

　　① The strong tend to bully the weak.

　　② Poor innocents deserve our greatest sympathy.

　　③Richard looked like a silly in such a situation.

　　④ The secretary knows the ins and outs of the matter.

　　⑤ Do you know the whys and wherefores of the accident?

　　⑥ Though a rich man now, Peters earlier life was marked by ups and downs.

　　上述這些轉化名詞，并未具有名詞全部的特性。例如the strong和the weak形式是單數，意思是復數。還有④-⑥這些轉化名詞既有復數之形，也具復數之意。

　　英語的實詞不但多義，而且同一詞還可以屬一種以上的詞類。此外，從一種詞類又可以轉化為另一種詞類，其中以⒈名詞轉化為動詞、⒉動詞轉化為名詞以及⒊形容詞轉化為動詞，這三種最為普遍、最為生動。轉化后的詞具有該詞基本的特性，因此轉化名詞有如真正名詞，轉化動詞就像真正動詞。

　　⒈名詞動詞

　　① The workers found Bobs attitude hard to stomach.

　　② The parachutist had to nerve himself for the jump from his helicopter.

　　③ A few poor children had been dogging the tourists for some time.

　　④ Tuition schools have mushroomed for the last two years.

　　⑤ The traitor was knifed and stoned to death.

　　⑥ I leafed through a few pages of the book to see what it was about.

　　⑦ Personality clashes surfaced among some rival leaders.

　　⑧ Tom elbowed his way through the crowd.

　　⑨ It is impolite to ape ones superiors.

　　⑩ Delicious food made our mouths water.

　　⒉動詞名詞

　　① The innocent girl was having a good cry.

　　② Active people are always on the go.

　　③ I often have a quiet read before going to bed.

　　④ People from all walks of life condemned a bad government.

　　⑤ Famine came in the wake of the drought.

　　⑥ The manager gave some lazy workers the sack.

　　⑦ Let me take a good look at these photos.

　　⑧ A visit to the Jurong Bird Park is a must for any tourist.

　　⑨ War is loathed by the haves and the have-nots.

　　⑩ If you have anything to discuss with me, dont hesitate to give me a ring.

　　⒊形容詞動詞

　　① Dont idle away your precious time.

　　② Fathers hair begins to grey.

　　③ How to quiet a fretful child?

　　④ We have no intention of seeing an innocent person humbled.

　　⑤ Something must be done to better the life of the underprivileged.

　　⑥ Language skills can be perfected by constant practice and regular reinforcement.

　　⑦ The robber wanted his victim to empty his pockets.

　　⑧ When the enemys ships neared the land, our soldiers began to attack.

　　⑨ The mans muscles tensed as he saw the snake approaching him.

　　⑩ The hot weather soured the fresh milk.

　　此外，有些形容詞和其他詞類也可以轉化為名詞。例如：

　　① The strong tend to bully the weak.

　　② Poor innocents deserve our greatest sympathy.

　　③Richard looked like a silly in such a situation.

　　④ The secretary knows the ins and outs of the matter.

　　⑤ Do you know the whys and wherefores of the accident?

　　⑥ Though a rich man now, Peters earlier life was marked by ups and downs.

　　上述這些轉化名詞，并未具有名詞全部的特性。例如the strong和the weak形式是單數，意思是復數。還有④-⑥這些轉化名詞既有復數之形，也具復數之意。