《2025年成才之路高中新课程学习指导高中英语选择性必修第三册人教版》

1. If it weren’t for sea animals, we would all starve.
要不是有海洋生物，我们都得挨饿。
句型剖析
If it were not for... 意为“要不是有……”“若不是因为……”。用于表示对现在情况的虚拟，主句用 would/should/could + 动词原形。
联想拓展
if 引导虚拟条件句

②were to + do
③should + do|should/would/could/might + 动词原形|
经典例句
If there hadn’t been your help and professional instruction, we couldn’t have done so brilliantly. (与过去事实相反)
如果没有你的帮助和专业指导，我们不可能做得如此出色。
Also, if I should have any difficulty in understanding any knowledge point, I would consult teachers or peers for clarification. (与将来事实相反)
此外，如果我在理解任何知识点时有任何困难，我会咨询老师或同行寻求解释。
温馨提示
在 if 引导的虚拟条件句中，如果谓语动词有 were/should/had 时，可以省略 if，把它们提到主语前面，条件从句变为部分倒装句。
即学即用
单句语法填空
(1) If it wereto rain (rain) tomorrow, we would have to put off the sports meeting.
(2) If youhad got (get) up earlier, you would have caught the train.
(3) If it had not been for this experience, Iwouldn’t have realized (not realize) that I should spend more time with my family.
句型转换
(4) If it were not for the support of the teachers, the student could not overcome her difficulty.
→Were it not for the support of the teachers, the student could not overcome her difficulty. (倒装句)

答案：
(1)to rain
(2)had got
(3)wouldn’t have realized
(4)Were it not for the support of the teachers