1l: It is universally acknowledged that trees are indispensable to us 全世界都知道树木对我们是不可或缺的 六、 There is no doubt that+句子~(毫无疑问的.) Fi]: There is no doubt that our educational system leaves something to be 毫无疑问的我们的教育制度令人不满意 七、 An advantage of~~ is that+句子(…优点是..) B An advantage of using the solar energy is that it won't create (produce any pollution 使用太阳能的优点是它不会制造任何污染 八、 The reason why+句子 that+句子(.原因是 Bi 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 我们必须种树的原因是它们能供应我们新鲜的空气 九、So+形容词+be+主词+that+句子(如此..以致于…) 例: So precious is time that we can't afford to waste it.时间是如此珍贵,我们 经不起浪费它。 十、Adj+as+ Subject(主词)+be,S+V~~(虽然.….) B]: Rich as our country is, the qualities ofour living are by no means satisfactory.{ by no means= In no way= on no account一点也不 虽然我们的国家富有,我们的生活品质绝对令人不满意。例：It is universally acknowledged that trees are indispensable to us. 全世界都知道树木对我们是不可或缺的。 六、There is no doubt that + 句子~~ （毫无疑问的……） 例：There is no doubt that our educational system leaves something to be desired. 毫无疑问的我们的教育制度令人不满意。 七、An advantage of ~~~ is that + 句子 （……的优点是……） 例：An advantage of using the solar energy is that it won't create (produce) any pollution. 使用太阳能的优点是它不会制造任何污染。 八、The reason why + 句子 ~~~ is that + 句子 （……的原因是……） 例：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. 我们必须种树的原因是它们能供应我们新鲜的空气。 九、So + 形容词 + be + 主词 + that + 句子 （如此……以致于……） 例：So precious is time that we can't afford to waste it. 时间是如此珍贵，我们 经不起浪费它。 十、Adj + as + Subject（主词）+ be, S + V~~~ （虽然……） 例：Rich as our country is, the qualities of our living are by no means satisfactory. {by no means = in no way = on no account 一点也不 虽然我们的国家富有，我们的生活品质绝对令人不满意