新概念英語第三冊(cè)逐句精講語言點(diǎn) 第55課 來自地球的問候(4)

　　Alternatively, if the star were small, the life-supporting planet would have to have aclose orbit round it and also provide the perfect conditions for life forms to develop.But how would we find such a planet? At present, there is no telescope in existencethat is capable of detecting the presence of life.

　　10.Alternatively, if the star were small, the life-supporting planet would have to havea close orbit round it and also provide the perfect conditions for life forms to develop.

　　反之，如果恒星很小，維持生命的行星就要在離恒星很近的軌道上運(yùn)行，而且要有極好的條件才能使生命得以發(fā)展。

　　語言點(diǎn):句子結(jié)構(gòu)分析:if引導(dǎo)虛擬語氣的句子，交代相關(guān)的先決條件。

　　11.But how would we find such a planet?

　　但是，我們?nèi)绾尾拍苷业竭@樣一顆行星呢?

　　語言點(diǎn):句子結(jié)構(gòu)分析:這個(gè)特殊疑問句中的such a相當(dāng)于one such。

　　12.At present, there is no telescope in existence that is capable of detecting thepresence of life.

　　現(xiàn)在，沒有一臺(tái)現(xiàn)存的望遠(yuǎn)鏡可以發(fā)現(xiàn)生命的存在。

　　語言點(diǎn):句子結(jié)構(gòu)分析:that引導(dǎo)定語從句。