1．描写实验目的：
(1)．..carry out an experiment to find out...
(2)The aim of the experiment is to find...
(3)．..with the purpose of discovering...
2．描写实验用品：
(1)To carry out/make/do/perform the experiment, you need...
(2)The following things are needed...
(3)The following apparatuses are used...
3．描写实验方法或过程：
(1)．..make good preparations for...
(2)It is important that...
(3)．..do the experiment as follows.
(4)firstly, secondly, thirdly, finally; first, then, next, after that; two hours later; after several days
(5)find a better way of doing...
(6)make a good study of...
4．描写实验结论：
(1)From this experiment we can conclude...
(2)．..draw/come to the conclusion that...
(3)We can learn from the experiment that...
(4)We can find out that...
(5)You can see/discover...
(6)In conclusion...
