digital

意为“数字的”，作形容词。digital是在名词digit的基础上加上后缀-al构成的。即：n．＋-al＝adj．。又如：educational。

你能写出几个相同结构的词吗？________　________　________

spacesuit

spacesuit是由space和suit构成的，英语中称之为合成词。又如：sunglasses。请你写出几个合成词：________　________　________

store

1)n．shop

e．g．There were not so many ________ around here before．

2)n．a supply of something kept for use in the future

e．g．This animals makes a ________ of nuts for the winter．

3)to keep something somewhere for future use

e．g．Dried food can be ________ for many months．

pack

1)v．to put things into a case or other container

e．g．Could you ________ me a few sandwiches?

She ________ her bags and left．

2)n．a large bag which goes on your back and in which you can carry things

e．g．The power ________ provides energy for the spacesuit．

hard

1)adj．firm and stiff

e．g．This cheese is as ________ as rock．

2)adj．difficult to do or understand

e．g．The problem is very ________．I can't work it out．

3)adv．making a great effort

e．g．He worked so ________ at his lessons that he passed the exam．

4)adv．strongly or heavily

e．g．It's raining ________ and ________

It was snowing ________ when I got there．

与你的同伴思考一下在火星上生活的优势与劣势。

fashionable

意为“流行的；时髦的”，作形容词。fashionable是在名词fashion的基础上加上后缀－able构成的。即：n．＋－able＝adj．。又如：comfortable。

你能写出几个相同结构的词吗？________　________　________

scientist

意为“科学家”，作名词。scientist是在名词science的基础上加上后缀-ist构成的。即：n．＋-ist＝n．。又如：artist。

你能写出几个相同结构的词吗？________　________　________

taste

1)v．to judge the taste of food or drink by putting a little into your mouth

e．g．Do you want to ________ the wine?

The fish ________ nice．

2)n．[C;U]the sensation of saltiness, sweetness and so on that you have when something is put in your mouth

e．g．This dish has a nice ________．

Have a ________ of the soup and tell me what you think．

tie

1)n．a band of cloth worn round the neck and tied in knot at the front

e．g．Most young men don't like wearing ________．

2)v．to fasten by drawing together and knotting

e．g．He ________　his horse to a big tree．

The little boy isn't able to ________ own shoe laces．