零时态 一时态 二时态条件句

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表示客观真理，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lf you heat ice，it melts第一时态条件句We use the first conditional to show a result of a condition that ispossible 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, l will go snowboarding第二时态条件句We use the second conditional to show a probable result of a conditionin the future. Unlike the first conditional, the future condition is not a reapossibility.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 if + past perfect + would have + past participle从句过去完成。主句would+have+donelf you had phoned yesterday, I would have asked you out to lunch today练习Practice: Zero conditional Which sentence below is a fact (F) Which is a habit (FO） If you boil water, it turns into steam. _ If I miss the bus, I usually walk. _ If our teacher is principal, the school director teaches us. - lf you eat too much fast food, your health will suffer. _ lf 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 2 If i_ ill Tomorrow, i _stay at home. _If i_a million dollars, I _buy a boat and sail around the worldIf you_on your birthday, you_ have seven years bad luck.If you _me to paint the room, i_ make you a special lunch.People_ weight, if they_ more exercise.If i _up early, I _ the early train. _Complete each sentence using a conditional tense (zero, first or second)If you gave me the money, _If I see her, _If you could live anywhere in the world_If 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面如 like enjoy，promise，miss， admit等词后面做宾语。选出下面的动名词，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 dont like wo