31.與現(xiàn)在完成時(shí)連用的兩個(gè)時(shí)間狀語
for+一段時(shí)間
since+時(shí)間點(diǎn)/一般過去時(shí)的句子
We have been studying English for three years.
我們?nèi)陙硪恢痹趯W(xué)習(xí)英語。
He has been staying here since he was five years old.
自從五歲以來，他一直待在這里。
We haven’t seen each other since ten years ago.
自從十年前以來，我們一直沒有見過彼此。
注意：for和since可以相互轉(zhuǎn)換。
Jenny has been collecting coins for several years.=Jenny has been collecting coinss in ceseveral years ago.
珍妮收集硬幣已經(jīng)有幾年的時(shí)間了。
32.除...…之外
except（不包括在內(nèi)）
besides（包括在內(nèi)）
Everyone could answer this question except Jim.
除了吉姆，大家都能夠回答這個(gè)問題。
There are three girls besides me.
除了我之外，還有三個(gè)女孩。
33.已經(jīng)
already用于肯定句中
yet用于否定句和疑問句末
Have you seen the film yet？
你看過這部電影了嗎？
I haven’t locked the door yet.
我還沒有鎖門。
Mom has already watered the flowers.
媽媽已經(jīng)澆花了。
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