（4）動詞see和hear的否定被動形式，表示“不能見性”（invisibility）和“不可聽性”（inaudibility），也可以用相應的形容詞invisible和inaudible來表達，例如：
 21）a．The aircraft got smaller and smaller in the distance until it could no longer be seen by the people on the ground．
 b．The aircraft got smaller and smaller in the distance until it was no longer visible to the people on the ground．
 c．The aircraft got smaller and smaller in the distance until it became invisible to the people on the ground．
 （那飛機顯得越來越小，直到地面上的人們再也看不見它了。）
 22）a．In the universe there are a lot of stars that can't be seen by the naked eye．
 b．In the universe there are a lot of stars that are invisible to the naked eye．
 （宇宙間有許許多多肉眼看不見的星星。）
 23）a．The speaker could be heard only with difficulty．
 b．The speaker was scarcely audible．
 b．The speaker was almost inaudible．
 （這講話的人讓人聽得費勁。）
 24）a．This ultrasonic sound can't be heard by the human ear．
 b．This ultrasonic sound is inaudible to the human ear．
 （這種超聲波人耳是聽不見的。）
 

（5）動詞 see／hear／find的被動形式，有時表示“存在”（existence）的意思，相當于“There＋be”結構，例如：
 25）a．You can see a man standing near the gate．
 b．A man can be／is seen standing near the gate．
 c．There is a man standing near the gate．
 （有個人站在大門附近。）
 26）a．People heard an explosion in the vicinity．
 b．An explosion was heard in the vicinity．
 c．There was an explosion in the vicinity．
 （人們聽到附近有爆炸的聲音。）
 27）a．You can find a lot of coal in this area．
 b．A lot of coal can be／is found in this area．
 c．There is a lot of coal in this area．
 （這個地區有許多煤。）
 28）a．You can find some stamps in that drawer．
 b．Some stamps can be／are found in that drawer．
 c．There are some stamps in that drawer．
 （那抽屜裡有一些郵票。）
 29）a．You can find pine-trees in most European countries．
 b．Pine-trees can be／are found in most European countries．
 c．There are pine-trees in most European countries．
 （大多數歐洲國家都有松樹。）
 

（6）這類動詞中，see， watch， notice， observe， feel後面可跟複合賓語，主要用于 V＋ sb．＋ do sth．和 V＋sb．＋doing sth．兩種句型中。前一種句型的複合賓語是非進行時态的，表示在一般時間内全過程的動作或已完成的動作；後一種句型的複合賓語是進行時态的，表示在一特定時刻正在進行而尚未完成的動作，或在一段時間内連續重複的動作，例如：
 30）a．I saw them cross the river yesterday afternoon．（＝ I saw them reach the other side．）
 （昨天下午我看見他們過了河。）
 b．I saw them crossing the river when I passed by at four yesterday afternoon．
 （＝ I didn't know if they reached the other side．）
 （昨天下午四點鐘我路過時，看見他們正在過河。）
 31）a．I heard him play the violin the whole afternoon．
 （整個下午我聽見他都在拉小提琴。）
 b．I heard him playing the violin when I passed by his room．
 （我經過他的房間時，聽見他正在拉小提琴。）
 32）a．I heard a door slam．
 （我聽見砰的關門聲。）
 b．I could hear a door slamming．
 （我聽見門砰砰作響。）
 33）a．He felt the house shake during the earth- quake．
 （地震時他感到房子搖動。）
 b．He felt the house shaking when he went to bed at ten last night．
 （昨晚十點鐘他上床睡覺時，感到房子在搖晃。）
 34）a．We watched the children play in the gar- den all the morning．
 （整個上午我們看着孩子們在花園裡玩耍。）
 b．We watched the children playing in the garden when I arrived．
 （我們到達時看到孩子們正在花園裡玩耍。）
 35）a．I noticed the guest leave his home yesterday afternoon．
 （昨天下午我看到這個客人從他家走了。）
 b．I noticed the guest leaving his home when I passed by．
 （我路過時看到那個客人正在告辭。）
 c．I noticed the guests leaving his home one by one．
 （我看到客人們正一個接一個向他告辭。）
 36）a．The policeman observed the man open the window of the shop．
 （那警察窺看到這個人撬開了商店的窗戶。）
 b．The policeman observed the man opening the window of the shop．
 （那警察看着這個人在撬商店的窗戶。）
 這類動詞中的taste後面不能跟複合賓語，而smell後跟複合賓語，隻能用 V＋ sb．＋ doing sth．句型，例如：
 37）a．He smelt something burn in the kitchen．（Impossible）
 b．He smelt something burning in the kitchen．
 （他聞到廚房裡有燒糊東西的氣味。）
 這類動詞中，隻有see，hear和observe具有被動形式，其餘的動詞沒有相應的被動形式，例如：
 38）a．I saw him come up the street．
 b．He was seen to come up the street．
 （我看見他沿街走來。）
 39）a．I saw him coming up the street．
 b．He was seen coming up the street．
 （我看見他正沿街走來。）
 40）a．The policeman observed the man enter the bank together with a woman．
 b．The man was observed to enter the bank together with a woman．
 （警察看到這男人跟一個女人一起走進銀行。）
 41）a．The policeman observed the man trying to force the lock of the door at midnight．
 b．The man was observed trying to force the lock of the door at midnight．
 （半夜時那警察看到這個人在撬商店的門鎖。）
 有些動詞，如 catch， find，也可後跟複合賓語，但隻用于 V＋ sb．＋ doing sth．句型，例如：
 42）a．We caught the thief stealing．
 b．The thief was caught stealing．
 （我們抓住這個在作案的小偷。）
 43）a．I found her cooking in the kitchen．
 b．She was found cooking in the kitchen．
 （我見她在廚房裡做飯。）
 此外，動詞see，watch，hear後跟複合賓語，還可用于 V＋sth．＋ done和 V＋ sth．＋ being done句型，例如：
 44）a．He saw the visiting team beat his team．
 b．He saw his team beaten by the visiting team．
 c．He saw his team beaten．
 （他看到自己的隊被客隊擊敗。）
 45）a．He saw the visiting team beating his team．
 b．He saw his team being beaten by the visiting team．
 c．He saw his team being beaten．
 （他看到自己的隊正被客隊擊敗。）
 46）a．They watched the visiting team beat their team．
 b．They watched their team beaten by the visiting team．
 c．They watched their team beaten．
 （他們看着他們的隊被客隊擊敗。）
 47）a．They watched the visiting team beating their team．
 b．They watched their team being beaten by the visiting team．
 c．They watched their team being beaten．
 （他們看着他們的隊正被客隊擊敗。）
 48）a．She heard some people speak English．
 b．She heard English spoken by some people．
 c．She heard English spoken．
 （她聽到有人講英語。）
 49）a．She heard some people speaking English．
 b．She heard English being spoken by some people．
 c．She heard English being spoken．
 （她聽見有人正在講英語。）