零时态一时态二时态条件句

1、零时态条件句We use the zero conditional when the result of a condition is alwaystrue. The time is not important because it is always a fact表示客观貞理，理所当然的事情The structure is if + present simple + present simple从句一般现在。主句一般现在If you heat ice, it melts第一时态条件句We use the first conditional to show a result of a cond

2、ition that is possible in the future表示未来可能的结果The structure is: if + present simple + will+ base verb从句一般现在。主句一般将来if it snows, 1 will go snowboarding第二时态条件句We use the second conditional to show a probable result of a condition in the future. Unlike the first conditional, the future condition is not a

3、 rea possibility.对现在情况和将来情况的虚拟The structure is if+ past simple + would+ base verb从句一般过去。主句would+动词原形If i won a million dollars, I would travel around the world第三时态条件句We use the third conditional to refer to a past condition that did nothappen or an impossible past condition对过去情况的虚拟The structure is i

4、f + past perfect + would have + past participle从句过去完成。主句would+have+doneIf you had phoned yesterday, I would have asked you out to lunch today练习Practice: Zero conditionalWhich sentence below is a fact (F) Which is a habit (FO )If you boil water, it turns into steam. _Tf I miss the bus, I usually walk

5、 _Tf our teacher is principal, the school director teaches us.-If you eat too much fast food, your health will suffer. _If you mix blue and red. you get purple _练习Fill in the spaces with a conditional tense (zero, first or second). Add 0,1 or 2If i ill Tomorrow, istay at home. _If ia million dollars

6、, Ibuy a boat and sail around the worldIf youon your birthday, youhave seven years* bad luckIf youme to paint the room, imake you a special lunch.Peopleweight, if theymore exerciseIf iup early, Ithe early train. _Complete each sentence using a conditional tense (zero, first or second)If you gave me

7、the money,If I see her,If you could live anywhere in the worldIf you have time next weekend,If we get too much homework.If I finish work early today,动名词三种形式第一个在介词的后面，第二个充当主语，第三个在特殊动词后而如likeenjoy, promise, niissi admit 等词后面做宾语。选出下而的动名词，并指出做那些成分。They are always talking about moving to a new location.Writing is a solitary professionThe worst thing about my job is the constant travelling.I practise touch-typing when I have the timeI really enjoy helping peopleHe is trained in bookkeepingThey really don't like wor