新概念英语一册同步语法强化Lesson 31—35

Lesson 31—35核心语法1. She's sitting under the tree. (L. 31)They're walking over the bridge.(L. 33)2. She's sitting under the tree.( L.31)3. It's running across the grass. (L.31)4. Mr. Jones is with her family. ( L. 33)5. This is a photograph of our village. (L. 35)语法扩展1．现在进行时现在进行时表示此时此刻正在进行的动作，常有now, at the moment 等表示现在的时间状语。

如：His sister is making the bed at the moment.Don't make too much noise. Grandfather is sleeping now.I'm looking for Jenny and John.由以上三个例子可以看出，现在进行时是由动词be(am, is, are)＋动词的现在分词构成。

现在分词一般由动词原形＋词尾－ing形式构成。

如：work——working do——doing climb——climbing go——goingread——reading beat——beating listen——listening hear——hearing以辅音＋不发音的e结尾的动词，去掉e再加－ing.如：type——typing make——making decide——deciding conclude——concluding improve——improving compete——competing以重读闭音世结尾的动词，双写词尾的辅音字母，再加－ing.如：get——getting run——running put——puttingbegin——beginning spit——spitting squat——squatting将现在进行时的句子变成疑问句需要将动词be提到主语之前。

如：Is he cleaning the room?What are you doing?现在进行时的否定或需要将否定词not放在动词be之后。

如：She's not learning English. She's learning Chinese.I'm not standing in the kitchen.2.介词under介词under也属于方位介词，后接名词或代词，表示“在……的下面”。

如：She's sitting under the tree.What are those kids doing under the table?3. 介词across介词across 后接名词或代词，表示延伸或活动的范围，相当于“穿过……”。

如：The dog is running across the grass.The ship sailed across the Atlantic.4.介词with介词with后接名词或代词，表示“和……在一起”随着……”。

如：She's with her family.I will not go with you.I．用所给词的适当形式填空。

1．It is a fine day.It is not __________ .(rain)2. He is _____________to his friends at the moment. (talk)3. She's _____________ a magazine in the library. (read)4. There _____________ some milk spilt on the floor. (be)5. Listen! The children are ____________. (sing)6. What _____________ the dog __________________?(do)7. Are the _______________ playing on the sand?(child)8. Is his brother _____________ his teeth? (clean)9. Nowadays she's ______________ a new novel. (write)10. It is very cold. Sally is _____________the window. (shut)II.选择填空.【】1、_____________raining now.A、ItB、It'sC、ItsD、It be 【】2、There _____________ some letters on the desk.A、amB、isC、areD、have 【】3、The boy is swimming ____________the lake.A、overB、acrossC、underD、with 【】4、There's a picture _____________ the wall near the door.A、inB、onC、overD、under 【】5、A bird is flying _____________ the house. Tim is looking at it.A、onB、withC、underD、over 【】6、Look! There are many cars _________the street.A、acrossB、inC、underD、on 【】7、The policeman is running ____________the thief.A、afterB、acrossC、behindD、over 【】8、The class is over. Students are going __________ the classroom.A、inB、out ofC、intoD、across1. He is play with one of his classmates now._____________________________________________________________________________ 2. The monkey is siting on the tree._____________________________________________________________________________ 3. Mis Smith is looking a picture._____________________________________________________________________________ 4. Mrs. Richards is taking of her coat._____________________________________________________________________________ 5. Tim is sharping his pencil._____________________________________________________________________________ 6. He is swimming over the pool._____________________________________________________________________________ 7. The children are going out the street._____________________________________________________________________________ 8. Two girls are walking alone the river._____________________________________________________________________________ 9. Is Mary do her homework?_____________________________________________________________________________ 10. I and Simon are having our lunch._____________________________________________________________________________ IV.连词成句。

1．very, this, untidy, is, bedroom_____________________________________________________________________________ 2. the, then, in, put, these, wardrobe, clothes_____________________________________________________________________________ 3. please, handbag, your, open_____________________________________________________________________________ 4. dog, across, running, the, the, grass, is_____________________________________________________________________________ 5. over, aeroplane, the, is, the, flying, river_____________________________________________________________________________ 6. some, there, on, boats, river, are, the_____________________________________________________________________________7.children, out, some, are, of, building, coming, the_____________________________________________________________________________ 8. I, wife, and, my, along, river, of, banks, along, are, the, walking, the_____________________________________________________________________________V.用所给的单词组填空，根据实际情况作相应变化。