题目内容
5．To plant trees every year is necessary for us．It's necessaryfor us to plant trees every year．
分析 对于我们来说每年植树是必要的．
解答 答案：It's necessary．原句是动词不定式To plant trees做主语，结合下文的结构for us to plant trees 联想到用it做形式主语，动词不定式做真正主语的句型It's+adj+for+sb+to do sth对某人来说做某事是怎样的，necessary形容词必须的，故答案是It's necessary．
点评 动词不定式，动名词或主语从句作主语时，通常把它们放在谓语动词前，而用it作形式主语，放到句首，
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相关题目
19．-Many teenagers show interesting the books that are written ________Guo Jingming．
-That's true．My son says he can get what he thinks and wants in his books．（ ）
-That's true．My son says he can get what he thinks and wants in his books．（ ）
| A． | by | B． | with | C． | for | D． | to |
2．（先通读下面短文，掌握其大意．然后从每小题的A、B、C、D、四个选项中选出一个能填入空白处的正确答案）
One day，a farmer was walking along a road with his son Thomas．The father said，"Look!There's a horseshoe（马蹄铁） （31）B the ground．Pick it up and put it in your bag．"Thomas said，"It wastes my time．"（32）D said nothing but he picked it up himself．When they got to a town，they had a rest．There the farmer（33）B the horseshoe and with the money he bought some strawberries．
The father and the son went on walking．The sun was well up in the （34）A．They soon drank up their water，and there wasn't a house or even a tree for them to（35）C．Thomas felt too（36）D to walk on．At this time，his father gave Thomas a strawberry （37）A he quickly ate it．After a while，his father gave him（38）B strawberry and once again，his son lost no time in putting it in his mouth．
And so they went on．The old farmer gave the strawberries and the son ate them．When Thomas had eaten up all the strawberries，his father said to him，"My dear son，if you picked up that horseshoe，you would have your own strawberries （39）D．Always remember the lesson （教训）：If you don't worry （40）A the little things，you'll find it difficult to do the great things．"
One day，a farmer was walking along a road with his son Thomas．The father said，"Look!There's a horseshoe（马蹄铁） （31）B the ground．Pick it up and put it in your bag．"Thomas said，"It wastes my time．"（32）D said nothing but he picked it up himself．When they got to a town，they had a rest．There the farmer（33）B the horseshoe and with the money he bought some strawberries．
The father and the son went on walking．The sun was well up in the （34）A．They soon drank up their water，and there wasn't a house or even a tree for them to（35）C．Thomas felt too（36）D to walk on．At this time，his father gave Thomas a strawberry （37）A he quickly ate it．After a while，his father gave him（38）B strawberry and once again，his son lost no time in putting it in his mouth．
And so they went on．The old farmer gave the strawberries and the son ate them．When Thomas had eaten up all the strawberries，his father said to him，"My dear son，if you picked up that horseshoe，you would have your own strawberries （39）D．Always remember the lesson （教训）：If you don't worry （40）A the little things，you'll find it difficult to do the great things．"
| 31．A．under | B．on | C．for | D．to |
| 32．A．His mother | B．His sister | C．His uncle | D．His father |
| 33．A．threw | B．sold | C．found | D．bought |
| 34．A．sky | B．mountain | C．river | D．tree |
| 35．A．have a look | B．have a try | C．have a rest | D．have a picture |
| 36．A．excited | B．cold | C．full | D．thirsty |
| 37．A．and | B．though | C．or | D．because |
| 38．A．the others | B．another | C．others | D．other one |
| 39．A．eaten | B．eating | C．eat | D．to eat |
| 40．A．about | B．to | C．for | D．in |
9．____ Jack_____ vegetables？（ ）
| A． | Is； like | B． | Is； likes | C． | Does； like |
6．Little Mermaid（美人鱼） to Shanghai and visitors can see it there now．（ ）
| A． | has moved | B． | has been moved | C． | will move | D． | was moved |
4．I can see the words on the blackboard clearly．Could you pass me my glasses？（ ）
| A． | almost | B． | already | C． | hardly | D． | still |