5) 其他同根名詞
ability to do 受到be able to 的影響
attempt to do 企圖
decision to do 決定, 受decide的影響
ambition,
be ambitious to do
effort
例：For ancient people, myths were often attempts explanation
A B
catastrophic events such as volcanic eruptions.
C D
分析：B錯(cuò)，應(yīng)改為to explain。 attempts后應(yīng)跟動(dòng)詞不定式短語表目的，故將名詞explanation改為to explain。
例：In the early 1960's the Civil Rights movement made great
A B
efforts for registering members of minorities to vote.
C D
分析：efforts to register, C錯(cuò)
C. 動(dòng)詞不定式的其他用法
(1) be to do 表示已安排好或者注定要發(fā)生的動(dòng)作，屬于將來時(shí)態(tài)的范疇
She and Anne are to meet at two o'clock.
(2)不定式的完成式為“to have done”，表示不定式的動(dòng)作在謂語動(dòng)作之前發(fā)生，這個(gè)完成式通常表示一般過去時(shí)
I am glad to see you.
I am glad to have seen your mother yesterday.
yesterday是一般過去時(shí)，修飾have seen.
(3) 形容詞后面使用動(dòng)詞不定式，主動(dòng)表示被動(dòng)
It is difficult to decide.
ability to do 受到be able to 的影響
attempt to do 企圖
decision to do 決定, 受decide的影響
ambition,
be ambitious to do
effort
例：For ancient people, myths were often attempts explanation
A B
catastrophic events such as volcanic eruptions.
C D
分析：B錯(cuò)，應(yīng)改為to explain。 attempts后應(yīng)跟動(dòng)詞不定式短語表目的，故將名詞explanation改為to explain。
例：In the early 1960's the Civil Rights movement made great
A B
efforts for registering members of minorities to vote.
C D
分析：efforts to register, C錯(cuò)
C. 動(dòng)詞不定式的其他用法
(1) be to do 表示已安排好或者注定要發(fā)生的動(dòng)作，屬于將來時(shí)態(tài)的范疇
She and Anne are to meet at two o'clock.
(2)不定式的完成式為“to have done”，表示不定式的動(dòng)作在謂語動(dòng)作之前發(fā)生，這個(gè)完成式通常表示一般過去時(shí)
I am glad to see you.
I am glad to have seen your mother yesterday.
yesterday是一般過去時(shí)，修飾have seen.
(3) 形容詞后面使用動(dòng)詞不定式，主動(dòng)表示被動(dòng)
It is difficult to decide.