for there to be還是for there being

介詞后是用動名詞還是不定式？英語習(xí)慣是用for there to be還是for there being?請看下面的一道考題：

Considering the dangerous situation, they asked for _________ another meeting.

A. there be B. there to be C. there being D. there was

【分析】此題很容易誤選C，因?yàn)榭瞻浊坝薪樵~ for，所以其后的 there be 的非謂語形式應(yīng)用 there being，而不用 there to be。其實(shí)錯了，正確答案應(yīng)是B。在通常情況下，there be 結(jié)構(gòu)出現(xiàn)在介詞后時，要用 there being 的形式，但這有一個例外，就是在介詞 for之后只能用there to be。比較(www.網(wǎng)址未加載)：

They planned on there being another meeting. 他們打算再開一次會議。

They planned for there to be another meeting. 他們打算再開一次會議。

再比較：

They asked about there being another meeting. 他們詢問是否要再開一次會。

It's essential for there to be another meeting. 有必要再開一次會。

請?jiān)倏匆活}（答案選B)：

For there _________ successful communication, there must be attentiveness and involvement in the discussion itself by all present.(www.網(wǎng)址未加載)

A. is B. to be C. will be D. being