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七、An advantage of -is that+句子(……的優(yōu)點是……)

例句：An advantage of using the solar energy is that it won't create(produce)any pollution.

使用太陽能的優(yōu)點是它不會制造任何污染。

八、The reason why+句子-is that+句子(……的原因是……)

例句： The reason why we have to grow trees is that they can provide us with fresh air. The reason why we have to grow trees is that they can supply fresh air for us.

我們必須種樹的原因是它們能供應(yīng)我們新鮮的空氣。

九、So+形容詞+be+主詞+that+句子(如此……以致于……)

例句：So precious is time that we can't afford to waste it.

時間是如此珍貴，我們經(jīng)不起浪費它。

十、Adj+as+Subject(主詞)+be，S+V-(雖然……)

例句：Rich as our country is，the qualities of our living are by no means satisfactory.(by no means=in no way=on no account一點也不)

雖然我們的國家富有，我們的生活品質(zhì)絕對令人不滿意。

十一、The+-er+S+V，-the+-er+S+V;The+more+Adj+S+V，-the+more+Adj+S+V-(愈……愈……)

例句：The harder you work，the more progress you make.

你愈努力，你愈進(jìn)步。

The more books we read，the more learned we become.

我們書讀愈多，我們愈有學(xué)問。

十二、By +Ving，-can-(借著……，……能夠……)

例句：By taking exercise，we can always stay healthy.

借著做運動，我們能夠始終保持健康。