Unit 8 Grammar Focus 语法专练（作业课件）-【原创新课堂】2020-2021学年九年级英语全一册（人教版）广东

九年级全一册 英语 人教版 Unit 8　It must belong to Carla. Grammar Focus　语法专练 一、根据句意，从括号中选择合适的情态动词填空。 1．The glasses ________(can't/mustn't) be Jack's.He never wears glasses. 2．This book _________(must/might) be Alices.Her name is on it. 3．Everyone __________(must/might) make mistakes，even the most successful people. 4．It _________(could/must) be a duck.I can't see it clearly. 5．—Where is the fish on the plate? —It _________(might/must) have been eaten by our cat.No one was at home today. can't must might could must 二、根据汉语意思完成下列句子。 1．她不可能正在等你。她还在实验室上化学课。 She __________________for you.She is having a chemistry class in the ______________． 2．她迟到了。她的表一定是停了。 She is late.Her watch _______________________． 3．他喜欢读书。现在他一定正在图书馆读书。 He likes reading.Now he______________________ in the library. can't_be_waiting laboratory must_have_stopped must_be_reading 4．八小时的工作之后你可能会感到疲倦。 You _________________________after 8 hours' work. 5．你不穿外套可能会感冒。 You ______________________________a cold without wearing a coat. may/might_be_sleepy/tired may/might_have/catch/get 三、语法选择。 The universe is really mystical (神秘的).Scientists have done lots of study about it but there is still much they haven't discovered. Scientists think that there __1__ life on the earth for many years.However，we haven't found life on any other planets __2__． There are eight planets __3__ the sun.The earth is one of them.There are humans，animals，plants and many other kinds of life on the earth.There is water and air，too.And compared to the other planets，the earth is not too hot __4__ too cold.None of seven other planets has an environment like that of the earth. The sun and its planets are called the solar system (太阳系)，and our solar system is a small part of a __5__ larger group of stars and planets，called the Galaxy or the Milky Way (银河系).There are __6__ stars in the Galaxy，and our sun is only one of them. Scientists have also discovered many other galaxies in the universe.Their light has to travel for many years to reach us.So __7__ is