仁爱版英语八年级下册《if引导的条件状语从句》讲解练习

名师讲解：if引导的条件状语从句

用 法 ① 主句为一般将来时态，if从句用一般现在时态（即主将从现）。 ② 主句中含有情态动词，if从句用一般现在时态。 例 句 We will stay at home if it rains tomorrow. 如果明天下雨，我将要呆在家。 If you finish your homework, you can go home now. 如果你做完了作业，你现在可以回家了。 ③ 主句为祈使句，if从句用Don’t jump into the river if you feel very 一般现在时态。 hot. 如果你感到很热，不要跳入河里。 ④ 主句为过去将来时，if从If I were you, I wouldn’t do it like that. 句用一般过去时态（如果涉及如果我是你，我就不会那么做的。 到be动词，一律都用were）。If you gave me some money, I would be very 此时，表达的是和现实相反的happy. 如果你给我一些钱，我就会很高兴推测，用虚拟语气。 的。 【边学边做】用括号内所给词的正确形式填空。 1. What will you buy if you ________（have）a lot of money? 2. If it ________（not snow）tomorrow, we will feel unhappy. 3. You mustn’t go to school if you ________（be）still in bed. 4. If he _______（be）at home at that time, he would know it. 5. Please show me the way if you ________（know）it.

6. You will hurt your teeth if you ________（eat）too much candy. 7. If you gave me a toy car, I _________（be）very happy. 8. I would get the prize if I _________（work）hard.

参考答案:

1 have 2 doesn’t 3 are 4 were 5 knew 6 were to eat 7 would be 8 worked