不定式的被动形式
当不定式的逻辑主语是动作的承受者时，这个不定式要用被动式，包括它的一般式和完成式
36) Here we found little snow,as most of it seemed blown off the mountain.
[A]to have been [B]to be [C]that it was [D]that it had been
37) For twelve years,Spanish censorship did not allow Lorca's name or his works .
[A] to mention;to be published [B] to be mentioned;to publish
[C] being mentioned;being published [D] to be mentioned;to be published
38) There is,it seems [A],no [B] limit to the satisfaction to be finding [C] in the pursuit of knowledge [D].
不定式的否定形式：否定形式是在不定式的标志to前边加not a
39)that new information to anyone else but the sergeant.
[A] They asked him not to give [B] They asked him to don't give
[C] They asked him no give [D] They asked him to no give
40)Please remember lights on in the future.
[A] don't leave [B] not to leave [C] not leaving [D] don't to leave
41)The teacher told [A] the students to don't [B] discuss [C] the takehome exam with each other
十、介词except和but(作“只有……，只能……”讲时)跟不定式结构(but与不带to的不定式连用)
He seldom goes back home except to ask for money from his parents.
He did nothing there except watch TV for the whole night.(不带to的不定式)
I had no choice but to stay in bed.
Last night I did nothing but prepare my lessons.
42)Lots of empty bottles were found under the old man's bed.He must have done nothing but .
[A] drink [B] to drink [C] drinking [D] drunk
43)When the streets are full of [A] melting [B] snow,you cannot help but getting [C] your shoes wet
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