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if从句的三种用法?

英语 2022-09-29 10:40 已查看[333]次

推荐解答

1、主将从现 (主句为一般将来时,从句为一般现在时); eg:If it rains(从句) ,I will stay at home(主句). =I will stay at home if it rains.

2、主句含有情态动词 (must、may、can etc.)从句为一般现在时; eg:If you drive too fast ,you may have an accident. =You may have an accident if you drive too fast.

3、主句为祈使句,从句要用一般现在时态; eg:Don't play computer games if you don't finish your homework.

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