题干
It might seem more difficult to speak politely than to be direct.看起来有礼貌的说话比直接讲更难。
点拨：seem 可作系动词或不及物动词，意为"____"。常见用法如下。
①主语＋ seem ＋ (to be) ＋ 表语
如：他好像是一个很聪明的男孩子。 ____
②主语＋ seem ＋ (to be) ＋ 不定式。
如：格林夫人好像不喜欢这个主意。 ____
③It seems ＋ that从句。其中， it 是形式主语，that 引导真正主语。
如：好像没有人知道在公园里发生了什么事。 ____
答案(点此获取答案解析）
好像,He seems to be a very clever boy.,Mrs. Green doesn't seem/seems not to like the idea.,It seems that no one knows what has happened in the park.
