名词性从句It is not clear_____the high price will soon be controlled.A.if B.whether为什么选whether,不选if.引导主语从句不是只有放在句首才不能用if吗?本句没有放在句首啊?
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名词性从句It is not clear_____the high price will soon be controlled.A.if B.whether为什么选whether,不选if.引导主语从句不是只有放在句首才不能用if吗?本句没有放在句首啊?
名词性从句
It is not clear_____the high price will soon be controlled.
A.if B.whether
为什么选whether,不选if.
引导主语从句不是只有放在句首才不能用if吗?本句没有放在句首啊?
名词性从句It is not clear_____the high price will soon be controlled.A.if B.whether为什么选whether,不选if.引导主语从句不是只有放在句首才不能用if吗?本句没有放在句首啊?
这句话其实是个强调句,完整的应为:
It is not clear that whether the high price will soon be controlled.
其中,去掉It is that ,句子原本的表达方式应为:
Whether the high price will soon be controlled is not clear.
作“是否”讲的时候,用whether 不用if
whether在这里作主语
A
If也有是否的意思,老师讲过,当 if 和whether同时出现并表“是否”时,必定选whether,能用if的地方一定能用whether,因为whether应用范围比较大,涵盖了if。
whether 是否的意思 if 如果的意思
否定句,用whether
高涨的物价是否能被控制还不清楚
用if会引起歧义,所以用whether保险
if做是否的意思只能用于状语从句,主语、表语从句只能用whether表示是否。
whether可以引导从句,作主语、表语或同位语,而if不能。如:
正: It was uncertain whether he would come.
误: It was uncertain if he would come.
正: His first question was whether Tom had arrived yet.
误: His fir...
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whether可以引导从句,作主语、表语或同位语,而if不能。如:
正: It was uncertain whether he would come.
误: It was uncertain if he would come.
正: His first question was whether Tom had arrived yet.
误: His first question was if Tom had arrived yet.
正: We must consider the question whether we will take these measures.
误: We must consider the question if we will take these measures.
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