3.Little Jim should love ______ to the theatre this evening.
A.to be taken B.to take C.being taken D.taking
析：根据this evening，应选表示将来义的选项，C、D应排除。Take后无宾语，必然要用被动式，故答案为A.
4.John was made ______ the truck for a week as a punishment.
A.to wash B.washing C.wash D.to be washing
析：根据be made to do sth.句式，可定答案为A.
5.The patient was warned ______ oily food after the operation.
A.to eat not B.eating not C.not to eat D.not eating
析：根据warn sb.（not）to do sth.句式，可排除B、D两项；又根据非谓语动词的否定式not总是在首位的规律，又可排除A，而定C.
6.——I usually go there by train. ——Why not ______ by boat for a change？
A.to try going B.trying to go C.to try and go D.try going
析：此题可根据why not后直接跟原形动词规律而一举确定正确答案为D.若将B项改为try to go，则要根据其与try going意义之别来确定答案。依据题干对话内容，乙方是建议甲方尝试乘船变变花样，所以答案仍为D.
7.______ a reply，he decided to write again.
A.Not receiving B.Receiving not
C.Not having received D.Having not received
析：非谓语动词的否定式not应置于首位，B、D皆为错误形式。A项不能表达先于decided的动作，只有选C项才表没收到信在先，决定再写信在后，所以C为正确答案。
8.Charles Babbage is generally considered ______ the first computer.
A.to invent B.inventing C.to have invented D.having mvented
解析：consider表“考虑”意时，其后动词用doing形式，此处不表“考虑”，而表“认为”，这时consider后作宾语补足语或主语补足语多为to do，to have done，to be等形式。据此可排除B、D两个选项。又因A表“要发明”意，不合题用，只有C表“发明了”意，才合题用，故选C.