language points

1. wish you were here wish 之后的宾语从句要用虚拟语气，用过去时表示对现在的愿望，用过去时完成时显示对过去的虚拟，“但愿， 要是。。。就好了”。 e.g. I wish I were a bird. How I wish that I had never met him! 2. expect e.g. I expect there would be strong agreement about this. expect +clause expect to do expect sb to do 3. on camels / on the camels / by camel on bikes / on the bike / on bikes in cars / in the car / by car