作者：郭克晴

1. Sometimes it's scary to talk about the future. 有時(shí)很害怕談到將來。

句中的it是形式主語,真正的主語是動(dòng)詞不定式短語to talk about the future。如:

It's important for us to learn English well. 對(duì)我們來說,學(xué)好英語很重要。

2. I hope so. 我希望如此。

此句即I hope I will be a doctor. 在動(dòng)詞think, hope, believe, be afraid等詞后可以用so來代替前句所說的內(nèi)容。如:

-Do you think Mr. Li will come this afternoon? 你認(rèn)為李先生下午會(huì)來嗎?

-I think/ hope/ believe so. 我想/希望/相信他會(huì)來。

-Are we late? 我們來遲了嗎?

-I'm afraid so. 恐怕是。

在否定句中think, believe可以有以下兩種形式:①I don't think/ believe so. ②I think/ believe not.而hope和be afraid 只能采用第二種形式。如:

-Do you think the bus will arrive here on time? 你認(rèn)為公共汽車會(huì)準(zhǔn)時(shí)來嗎?

-I don't think so. / I think not. 我想不會(huì)。

-Do you think we'll have bad weather? 你認(rèn)為我們會(huì)碰上壞天氣嗎?

-I hope not. (不說I don't hope so.)希望不會(huì)。

-Are we on time? 我們會(huì)準(zhǔn)時(shí)嗎?

-I'm afraid not. (不說I'm not afraid so.)恐怕不能。