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外研版（2019）选择性必修二英语《Unit 4 Breaking boundaries》Period 2 Using language优秀教学ppt课件
Unit 4 Breaking boundaries
Period 2 Using languages
a. It is vital not to take any chances.
b. Not to take any chances is vital.
c. It is importance to remember that Ebola doesn't respect national boundaries.
d. to remember that Ebola doesn't respect national boundaries is important.
1. What does “it” refer to in the sentences above?
In sentences “a” and “c” respectively refer to “not to take any chances. ” and “to remember that Ebola doesn't respect national boundaries.”
2. What is the difference between the sentences in each group?
In the first sentences, empty subject “it” is used as the subject, while in the second sentence, the “to infinitive” is the subject.
3. Why does the author choose to use sentences “a and c” instead of “b and d”?
The infinitive structures in the sentences are too long.
Rewrite the sentences using it as an empty subject.
1. To get roles in American film and television is no longer quite so difficult for women and minorities.
It is no longer quite so difficult for women and monorities to get roles in American and television.
2. To become a leading actor in Hollywood is now a more realistic hope for minority actors.
It is so now a more realistic hope for minority actors to become a leading actor in Hollywood.
3. To write and direct Hollywood films is more common than before for women.
It is more common than before for women to write and direct Hollywood films.
4. To cast white actors as Asian characters is seen as acceptable that things by film studios.