We haven't been told if they ( )on time.If they ( ),I will t
4个回答

答案对,原因不太明了!这样也许更清晰——

1、选C.

句子意思:

我们未被告知他们【是否】会按时来.【如果】他们到了,我将立刻告知你.

考点:

if 的不同意思和引导不同从句的时态搭配.

关键:

if表示【是否】,引导宾语从句.时态依据句子意思和前后关系搭配使用.

这里,句子意思表示【是否将会来】,因此,用一般将来时.

if表示【如果】,引导条件状语从句.主句用一般将来时,if从句用一般现在时代替一般将来时.

所以,只有C正确.

2、

It is( )book that it is sold out within 30 minutes

A.such interesting a B.so a interesting

C.so interesting a D.a such interesting

选C.

考点:

such...that和so...that连接单数可数名词的结构.

知识链接:

such+a/an+形容词+单数可数名词

so+形容词+a/an+单数可数名词

例如:

She is such a good teacher that we all respect her.

=She is so good a teacher that we all respect her.

祝你开心如意!