误：I suspect him the pickpocket.

正：I suspect him to be the pickpocket.

析：suspect(猜想, 认为)后不接“名词＋名词”的结构，但是可接 “名词＋不定式(通常为 to be)”，且该结构通常可以用从句 来改写，如上面的误句也可说成：I suspect that he is the pickpocket. 注：以上结构中的不定式通常是 to be，若用其 它动词，则通常是完成式或进行式，如：We suspect him to have said so.(我们猜他是那样说过)，I suspect him to be dying.(我看他快要死了)。

◆她怀疑他拿了她的钱。

误：She suspected him for taking her money.

正：She suspected him of taking her money.

析：suspect sb of (doing) sth＝猜测某人做某事(注意其中用介 词 of，不用 for)。如：We suspect him of telling lies.(我们怀疑他说谎)。比较：I suspect him to be the thief. / I suspect him of being the thief. / I suspect that he’s the thief.(我怀疑他就是那个贼)。

◆我对他的动机甚为怀疑。

误：I’m very suspect about his motives.

正：I’m very suspicious about his motives.

析：suspect 用作动词，其意＝怀疑，猜测；用作名词，其意＝嫌 疑犯；用作形容词，其意＝可疑的。suspicious 是形容词，其意包括两个方面：①可疑的(常可与 suspect 互换)；② 怀疑的，多疑的，疑心的(此时不可用 suspect 代之)。