不定式作賓語

不定式作賓語有兩種：一種是及物動詞后直接跟帶to的不定式;另一種是“動詞+疑問詞+帶to的不定式”

1、動詞+帶to的不定式結構

只能跟動詞不定式的動詞，常見的有：afford，agree，aim，appear，arrange，ask，believe，care，claim，decide，decline(拒絕)，demand，desire，determine，endeavor，expect，fail，hesitate，hope，intend，learn，long，manage，mean(想要)，offer(表示愿意做…)，pretend，promise，refuse，seek(試圖)，swear，undertake，wish(想要)等。

5) We refuse that there are insufficient funds in the great vaults(銀行保管庫)of this nation.

[A] to believe [B] to be belived

[C] beliving [D] have belived

6) The green turtle has been known over 2,000 miles to return to a nesting site.

[A] in the navigating [B] the navigation [C] to navigate [D] navigation

7) For the [A] first time Venusian scientists managed landing [B] a satellite on the planet Earth, and it has been sending [C] back signals as well as [D] photographs ever since.

8) The day is past when Chinese universities and colleges to give high school diplomas to all who sit through four years of instruction, regardless of whether any visible results can be discerned.

[A] afforded [B] affording

[C] to afford [D] can afford

從上例我們可以看出afford一般與can和can't或could和couldn't連用。