用省略句改写下列句子
1．When I was asked how to get to the train station, I told him right away.
→When_asked_how_to_get_to_the_train_station,_I told him right away.
2．You can ask my brother for help if it is necessary.
→You can ask my brother for help if_necessary．
3．We don’t go to the cinema as much as we used to go to the cinema.
→We don’t go to the cinema as_much_as_we_used_to．
4．No matter how frequently they are performed, the works of Beethoven still attract people all over the world.
→No_matter_how_frequently_performed,_the works of Beethoven still attract people all over the world.
5．If the experiment can be done carefully, it is sure to succeed.
→If_done_carefully,_the experiment is sure to succeed.
6．While I was walking along the street, I heard my name called.
→While_walking_along_the_street,_I heard my name called.
7．When it is possible, people should use reproducible energy instead of fossil energy.
→When_possible,_people should use reproducible energy instead of fossil energy.
8．He looked everywhere as if he was in search of something.
→He looked everywhere as_if_in_search_of_something．
9．Though he was tired, he kept on working in the field.
→Though_tired,_he kept on working in the field.
10．The boy used to play with the knife though his father told him not to play with the knife.
→The boy used to play with the knife though his father told_him_not_to．
