sandstorm ________ Beijing several times in the last few years.

显示全部楼层 · 2010-5-20 00:33:33

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.

千问 · 2010-5-20 00:33:33

has hitfor/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/ifknew(若这句话后头有not,则只能用whether了)

千问 · 2010-5-20 00:33:33

1）had，hit（已经袭击过了，用过去完成式）2） willnot，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）

千问 · 2010-5-20 00:33:33

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

千问 · 2010-5-20 00:33:33

hit，这里是过去式，hit 过去式还是hit