1. 過去分詞作表語表示主語所處的狀態，雖含有被動性，但這類分詞幾乎已經變成了形容詞。
The door remained locked. 門依然鎖著。
Don't get excited, boys and girls. 孩子們，不要激動。
He seemed quite surprised at the idea. 聽了這想法他似乎很驚訝。
He looked tired with cooking. 他顯得不願做飯。
He got laughed at at school. 他在學校裡受人嘲笑。
To the great joy of us, she grows interested in nature.
2. 有些過去分詞作表語構成的謂語很接近被動語態。
He found the room was packed / crowded with people.
Everything is settled now. You can leave for Beijing.
The town is surrounded on three sides by mountains. 這座城三面環山。
3. 如何區分被動語態和過去分詞作表語？
如果是被動語態，則其有相對應的主動語態。被動語態中的 -ed 分詞可以是單詞動詞、介詞動詞、詞組動詞。被動語態中的-ed 不能被very修飾。
作表語的過去分詞具有形容詞的功能，可以被 very 等程度副詞修飾，可以有比較級。不用介詞 by引出施動者。
比較：
I am very interested in chess. (-ed分詞作表語)
I was interested by what you told me. (被動語態)
下列例句中的過去分詞都是做表語的。
He was dead drunk. 他爛醉如泥。
He is easily excited. 他很容易激動。
He felt cheated at the party. 他感到在宴會上受騙了。
In China agriculture is becoming more and more mechanized. 在中國農業正越來越機械化。
Conditions here are not what she's used to. 這裡的條件不是她所能習慣的。
I am tired of boiled eggs. 我吃厭了煮蛋。
Water is composed of hydrogen and oxygen. 水是由氫和氧化合而成的。
He is engaged in letter writing. 他正忙於寫信。
You looked astonished at the news. 你對這消息似乎感到驚異。
It's nothing to get excited about. 這沒有什麼值得興奮的。
You'll soon get used to the change of climate. 你很快就會習慣氣候的變化的。
I'm feeling tired out. 我感到累極了。
本文由書生小二郎原創。小二郎在省重點高中從事英語教學20餘年，所帶班級高考重點率在93.5%以上，多名學生考入香港大學、北京大學、清華大學、浙江大學、北京外國語大學等名校，擅長指導學生短期內快速提高英語能力和考試成績。關注我，我們一起思考，共同成長！