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本課複習被動語態
及物動詞(即動詞後可加賓語)才有被動語態。如果要說明是什麼人或什麼東西做了某事，則用“by+動作執行者”
10課
We have an old musical instrument.主動語態
It is called a clavichord.被動語態
It was made in Germany in 1681.
The instrument was bought by my grandfather many years ago.
34課
無論是主動還是被動語態，句子的主語往往是說話者認為比較重要或想要強調的。如果說話人想避免用不明確的詞（如 someone， a person等）作主語，就常常使用被動語態。
In the letter he was asked to call at the station.
不定式用被動語態
At the station, he was told by a smiling policeman that his bicycle had been found.
smiling現在分詞做定語，賓語從句，語序，時態一致，過去完成時的被動語態
It is now being sent to his home by train.
現在進行時被動語態
58課
The tiny village of Frinley is said to possess a ‘cursed tree'.
主語+ be said+…結構，通常譯為“據說……”，是對不太有把握的事發表看法時一種謹慎的說法。
Because the tree was mentioned in a newspaper, the number of visitors to Frinley has now increased.
the number of ...的數量謂語動詞用單數
The tree was planted near the church fifty years ago, but it is only in recent years that it has gained an evil reputation.
it is…that 強調句型
如果要強調某個詞或某個短語，可以用 it is/was+被強調的成分+that/ who(m)結構
被強調的成分可以是主語、賓語、狀語等
it is...that去掉，句子完全不缺任何成分
本句強調時間狀語
新概念三21課
It was not until his third match in 1790 that he finally beat Humphries and became Champion of England. 強調時間狀語
新概念三50課
It was this that betrayed me.強調主語
本課
Fishermen and sailors sometimes claim to have seen monsters in the sea.
to have seen不定式的完成式結構，不定式的動作發生在謂語動作之前
新概念三30課
A farm worker, who stayed up all night claimed to have seen a figure cutting corn in the moonlight.
Though people have often laughed at stories told by seamen, it is now known that many of these ‘monsters' which have at times been sighted are simply strange fish.
laught at詞組
told by seamen這是過去分詞短語做定語（非謂語動詞），不是被動語態（被動語態構成be+done），但是過去分詞含有被動的意思
it is now known that
不定式的完成式常用於believe，declare，find，say，see，know，think，understand等動詞後（這些動詞常用被動語態）
which have at times been sighted 又一個被動語態，在完成時中應用。本課複習被動語態，全程被動語態往上懟
Occasionally, unusual creatures are washed to the shore, but they are rarely caught out at sea.
又出現兩處，本課列舉的3個句子出現了5次被動語態，希望大家去應用
rarely含有否定意義的副詞，極少
28課
Jasper White is one of those rare people who believes in ancient myths.
66課
By this time, a Lancaster bomber in reasonable condition was rare and worth rescuing.
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