三、句式之间的转换
这里主要是复合句与简单句、主动语态与被动语态等之间的转换。
1．复合句与简单句之间的转换
19）The box is so heavy that we can't carry it upstairs．
The box is ________ ________ ________ ________ to carry upstairs．
20）The man is so old that he can't walk very fast．
The man is ________ ________ ________ ________ very fast．
21）They don't know what they should do next．
They don't know ________ ________ ________ next．
22）He joined the army two years ago．
________ ________ about two years ________ he joined the army．
23）When he was 12 years old，he began to work for a boss．
________ ________ ________ ________ 12，he began to work for a boss．
2．主动语态与被动语态之间的转换
24）They are building a new bridge over the river．
A new bridge ________ ________ ________ over the river．
25）We all know him．
He ________ ________ ________ us all．
3．宾语从句与复合宾语之间的转换
26）I saw he was reading a newspaper over there．
I saw ________ ________ a newspaper over there．
4．“祈使句＋and／or．．．”与“if引导的条件句……”之间的转换
27）Hurry up，or we will be late．
________ ________ ________ ________ ，we will be late．
28）If you ask her again，she will tell you about it．
________ ________ ________ ，________ she will tell you about it．
有时候靠词形变化来达到同义转化，如：
29）There will be rain this afternoon．
It will ________ ________ this afternoon．
（Keys：19）too heavy for us 20）too old to walk 21）what to do 22）It is，since 23）At the age of 24）is being built 25）is known to 26）him reading 27）If we don't hurry 28）Ask her again，and 29）be rainy）
