四道英语句型转换,1.What you have done does harm to the environment.What you have done _____ _____ _____/ _____ _____ _____ the environment.2.When do you think this custom began to exist?When do you think this custom _____ _____ _____?3.I stud

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四道英语句型转换,1.What you have done does harm to the environment.What you have done _____ _____ _____/ _____ _____ _____ the environment.2.When do you think this custom began to exist?When do you think this custom _____ _____ _____?3.I stud

四道英语句型转换,1.What you have done does harm to the environment.What you have done _____ _____ _____/ _____ _____ _____ the environment.2.When do you think this custom began to exist?When do you think this custom _____ _____ _____?3.I stud
四道英语句型转换,
1.What you have done does harm to the environment.
What you have done _____ _____ _____/ _____ _____ _____ the environment.
2.When do you think this custom began to exist?
When do you think this custom _____ _____ _____?
3.I study hard so that I may not fail in the examination.
I study hard _____ _____ _____ _____ / _____ _____ _____ _____ fail in the examination.
4.I don't know it exactly.
I don't know it _____ _____.

四道英语句型转换,1.What you have done does harm to the environment.What you have done _____ _____ _____/ _____ _____ _____ the environment.2.When do you think this custom began to exist?When do you think this custom _____ _____ _____?3.I stud
1、is harmful to / cause danger to
2、start to happen
3、in order not to / in case not to
4、for sure