and和but是連接詞 排除掉
still和yet
yet多用于否定句
“already”用于肯定句,“yet”用于否定句.
如:
1) He has already finished his homework.
2) I have not finished reading the book yet.
注意:“already”用于疑問句時(shí),表示驚奇.
如:Have you already seen him?
still既可用于肯定句又可用于否定句,表示動(dòng)作或狀態(tài)的持續(xù).
如:
1) She still likes him.
2) I still can not understand you.
注意:“still”置于動(dòng)詞前后,會使句意發(fā)生變化.
如:
1) He is still standing.(continue to stand)
2) He is standing still.(=standing motionless)
簡單點(diǎn)就是
still一般在句子中間
I still do my homework
yet一般在句尾
I haven't done my homework yet
所以選c
If I had __known she was ill ,I would have visited her
If I had __known she was ill ,I would have visited her
A and B.but C.still D.yet
選什么,原因
A and B.but C.still D.yet
選什么,原因
英語人氣:454 ℃時(shí)間:2019-11-02 20:35:50
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