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4. 它们被手工采摘。
This ring is made of silver.
They are made in China.
Tea plants are grown on the sides of mountains.
They are picked by hand.
Can you find out the regular rules?
1. This ring is made of gold.
2. They are made in China.
3. Tea plants are grown on the sides of mountains.
4. They are picked by hand.
is made
are made
are grown
are picked
is made
are made
are grown
are picked
be
vpp.
＝
语态：表示主语和谓语动词之间的关系。
英语有两种语态，即主动语态和被动语态。
主动语态：表示主语是动作的执行者。被动语态：表示主语是动作的承受者。
Many students study English. (主动语态）
English is studied by many students.(被动语态)汉语中常用“被”、“给”、“由”、“受”等词用来表示被动，而英语用：助动词be + vpp.构成。
语态
Such books are written for children.
这些书是为儿童写的。
被动语态的用法