作业帮sandstorm ________ Beijing several times in the last few years.用 HIT 的正确形式填空Kitty will believe it when she has seen it with her own eyes.（保持句意不变）Kitty ______________ believe it _____________she has seen it with her own
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sandstorm ________ Beijing several times in the last few years.用 HIT 的正确形式填空Kitty will believe it when she has seen it with her own eyes.（保持句意不变）Kitty ______________ believe it _____________she has seen it with her own
sandstorm ________ Beijing several times in the last few years.
用 HIT 的正确形式填空
Kitty will believe it when she has seen it with her own eyes.（保持句意不变）
Kitty ______________ believe it _____________she has seen it with her own eyes.
Did they know the answer to the question?I don`t know.(合并为复合句)
I don`t know _______________ they ______________ the answer to the question.
sandstorm ________ Beijing several times in the last few years.用 HIT 的正确形式填空Kitty will believe it when she has seen it with her own eyes.（保持句意不变）Kitty ______________ believe it _____________she has seen it with her own
has hit
for/in/during+the past/last+一段时间,多与现在完成时或现在完成进行时连用.
根据语境事情是发生完了,不是发生了并仍继续,所以用现在完成时.
won't until （not ...until句型,直到...才...）
whether/if knew (若这句话后头有not,则只能用whether了)
has hit
in + 时间段 与现在完成时连用，因此用现在完成时 has hit
在过去几年里，沙尘暴已经多次侵袭北京
1）had ， hit （已经袭击过了，用过去完成式）
2） will not ， until （一个固定句式 ）
3） whether或者if ， knew （但是我觉得原句的时态不太一致哦，读起来很不舒服）
hit，这里是过去式，hit 过去式还是hit