5. 不用被动语态的情况
1）当谓语是表示状态或特征的及物动词时，不用被动语态。这样的及物动词有have, become, cost, reach, sell, arrive, fit, lack, contain, hold, own, suit等。如：
    We have a good teacher. 我们有一位好老师。
    My shoes don't fit me. 我的鞋不合脚。
    Jack always lacks confidence. 杰克总是缺乏信心。
    The classroom holds 80 students. 这间教室容纳80个学生。
2）及物动词的宾语为反身代词、相互代词、非谓语动词、同源宾语时，都没有被动语态。如：
    The boy taught himself English. 这男孩自学英语。
    We help each other.  我们互相帮助。
    Alice hopes to visit her hometown. 爱丽丝希望去看看她的家乡。
    They live a happy life. 他们过着一个幸福的生活。
    She dreamed a bad dream last night. 昨天晚上她做了一个噩梦。
3）有些及物动词或动词短语也不用被动语态。这样的动词和短语有marry, wish, notice, watch, agree with, arrive at/in, shake hands with, succeed in, suffer from, happen to, take part in, walk into, belong to等。如：
    The accident happened last night. 事故发生在昨天晚上。
    I agree with you.   我同意你的意见。
4）当谓语动词是连系动词、不及物动词或相当于不及物动词的动词短语时，不用被动语态。这样的动词有appear, be, become, fall, feel, get, grow, keep, look, remain, seem, smell, sound, stay, taste, turn, die, disappear, end (vi. 结束), fail, happen, last, lie, remain, sit, stand, break out, come true, fall asleep, keep silence, lose heart, take place等。如：
After the fire, very little remained of my house. 大火后，我房子里所剩无几。 
A few minutes later, the man appeared.  几分钟后，那个人出现了。
5）当宾语是不定式时，很少用于被动语态。例如：
  （对）She likes to swim.
  （错）To swim is liked by her.