句型转换。 1. His father started to work when he was thirteen years old. (改为同义句) His father started to work _____ _____ _____ _____ thirteen. 2. Mr. Brown married a young nurse. (改为一般疑问句) ________________________________________________? 3. Her brother joined the Army two years ago . (对画线部分提问) ________________________________________________? 4. The old woman had a lot of money. (改为同义句) The old woman _____ very _____. 5. We had a little TV at that time. (改为否定句) _________________________________________________