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young是形容词，意思是“年轻的”，反义词是 old “年老的”。
He is very young but his grandfather is old.
他很年轻，但他的爷爷老了。
Step 3 Grammar
He left school and began work at the age of 12.
But he took the name Mark Twain and became very famous in the 1860s.
He wrote 38 plays.
In 1599 the company built the Globe Theatre.
一般过去时
动词过去式规则的，在其后直接加-ed，不
规则的需要单独记忆。例如：
We left at nine o’clock in the morning.
They swam in the swimming pool and had a good time. He wrote some postcards and sent some emails.
be
was/were
是
leave
left
离开
buy
bought
买
meet
met
遇到
come
came
来
read
read