条件状语从句

A．在表示假设情况的条件状语从句中中，主句用一般将来时，从句中用一般现在时表示将来，当 从句放在主句之前时，用逗号将从句与主句隔开，但当主句在前从句在后时，则不需要逗号。

　 If it doesn’t rain tomorrow, we will go fishing.

B．在表示一个客观事实或经常性有规律性的事实的条件状语从句中，主句与从句都用一般现在时。

　 If you step on a snake, it attacks you.

　 If I don’t have food, I die.

32. What action(s) can the club take ?

31. Baby giant pandas spend a lot of time drinking their mums’ milk ----up to 14 hours a day.

30. They look lovely on me.

29. They are friendly towards each other and never attack people.

28. They do not kill for fun.

27. We are writing to you about protecting wild animals.

26. If we do nothing, soon there will be no giant pandas in the world.

25.They seldom hurt people.它们很少伤害人。

21.I think you should not buy clothes (made of animal fur).

★★22.If farmers continue to make new farmland, wild animals won’t get enough food.

如果农民继续开辟新的农田，那么野生动物将得不到足够的食物。

★★23.Mother giant pandas have only one or two babies at a time.

★★24.Their number is getting smaller and smaller because their living areas are becoming farmland.他们的数量越来越少，因为他们的居住地正变成农田。