Unit 2 Grammar and usage 课件-2022-2023学年高中英语牛津译林版(2020)选择性必修第三册

Further Consolidation on the text. 1 Book 10_课件_U1�_Reading2-8 An astronaut has written a journal entry about an experiment in the space lab. Complete the journal entry with the correct forms of the words and phrases in the box below. visible circumstance absence cast new light on bother evaluate mission of vital importance On the space station, one of the main ____________ of astronauts is to do experiments. Some experiments aim to ____________ the effects of low gravity. We are currently working on an experiment: how to grow vegetables in space. It is difficult to keep food fresh longer than 18 months in space, so growing vegetables is _________________ for longer space missions. Hopefully, this experiment will ______________ space farming and allow us to set up permanent bases on other planets, such as Mars. Despite these ___________ benefits, there are many challenges. missions of vital importance cast new light on visible evaluate One challenge is that the environment in space is altogether different from that back on the Earth. In normal ____________, plants grow upwards. However, because of the near ____________ of gravity in space, there is no such thing as “up” or “down”. Fortunately, a special kit has been developed. It contains special “bags”, which provide the soil and nutrients for plants. The seeds in the bag are glued to a special material that will guide them to grow in the right direction. Another thing that _________ us is the safety of eating the vegetables grown in space. We need to do a scientific analysis after the space-grown vegetables are sent to the Earth. circumstances absence bothers The lecture transcript uses the words in the table below. Complete the table with word from the same word family. Then try to think of more word families. Verbs Nouns Adjectives Adverbs adventure differ definitely rewarding remarkable Verbs Nouns Adjectives Adverbs adventure differ definitely rewarding