【正文】
haven’t seen Tom for a long time,so I him . earth is a pla and it t he sun. has been life on earth for years. is one galaxy. have send information to us. 6.— Tom,I’ve just heard that scientists have sent a spacecraft to Mars. — Really?I haven’t this yet. Ⅱ .,a message around of than to about ● Exercises for function items (交際用語專練 ) Ⅲ .Complete the dialogue with the right choice in the box. (從方框中選出適當(dāng)?shù)木渥友a全對話。finished 。have finished ?!?have/has been to+地點”表示“曾經(jīng)去過某地 (但現(xiàn)在已不在那兒 )”。其意分別為“已經(jīng) ,剛剛 , spacecraft has just reached the moon. astronauts have already visited the space station. 。 ● Sentence structure training (句子結(jié)構(gòu)專練 )