(1) The weather in the south is much better than in the north. = The weather in the south is much better than the weather in the north is good. 南方的天气比北方的天气好多了。

(2) The Beijing you see today is much more beautiful than it was twenty years ago. = The Beijing you see today is much more beautiful than it was beautiful twenty years ago. 你今天所看到的北京比二十年前的北京漂亮多了。

注意：当比较的主句和从句都为及物动词带宾语时，从句省略后，留下的代词用主格或宾格时，意思不同。如：

He likes the dog better than she. 他比她更喜欢那条狗。

He likes the dog better than her. 他喜欢那条狗甚于喜欢她。

因此，从句的主语若为名词，省略谓语部分后须加助动词do 的适当形式，否则就会产生歧义。如：

He likes his dog better than his wife does. 他比他的妻子更喜欢那条狗。

He likes his dog better than his wife. 他喜欢那条狗甚于喜欢他的妻子。

5. 名词性从句中的一部分省略。如：

(1) He was late this morning, but I don’t know why. 他今天早晨吃到了，但我不知道他迟到的原因。

(2) He got here this morning, but do you know how? 他今天早晨就到这儿了，但我不知道他是怎么来的。

6. 主句中的一部分省略。如：

(1) Glad to hear that you succeeded in finding the answer. 听说你成功地找到了答案，我很高兴。

(2) What if he did come today? 要是他今天不来，那怎么办呢？