Thechairlooksratherhard,butinfact,itisverycomfortableto...

問題詳情：

The chair looks rather hard, but in fact, it is very comfortable to ________.

A．sit                               B．sit on

C．be sat                            D．be sat on

【回答】

B　後一分句爲：sth.＋be＋形容詞＋to do句型，sit是不及物動詞，後加介詞on後構成不定式短語，主語it是介詞on的邏輯賓語。

知識點：動詞

題型：選擇題