there be 句型基本認(rèn)識
1仙逻、定義：
There be句型表示某處存在某物或某人犹撒。
2、結(jié)構(gòu)：
(1)There is +單數(shù)可數(shù)名詞/不可數(shù)名詞+ 地點(diǎn)狀語.
(2) There are +復(fù)數(shù)名詞+地點(diǎn)狀語.
注意事項：there是引導(dǎo)詞牺汤，在句中不充當(dāng)任何成分姐浮，翻譯時也不必譯出。句子的主語是某人或某物呼奢，謂語動詞be要與主語（某人或某物）的數(shù)保持一致宜雀。
There be句型的就近原則:
當(dāng)主語是兩個或兩個以上的名詞時，謂語動詞要與跟它最近的那個名詞一致握础。如：
① There is a bird in the tree. 樹上有一只鳥辐董。
② There is a teacher and many students in ourclassroom. 我們教室里有一位老師和許多學(xué)生。
③ There are two boysand a girl under the tree. 樹下有兩個男孩禀综，一個女孩简烘。
there be 句型考點(diǎn)
考點(diǎn)一：各種句型轉(zhuǎn)化。
1定枷、變成否定
There be句型的否定式的構(gòu)成和含有be動詞的其它句型一樣孤澎，在be后加上not或no即可。
注意not和no的不同：not是副詞欠窒，no為形容詞覆旭，not a/an/any + n. 相當(dāng)于no+ n.。例如：
①There are some pictures on the wall.
→There aren't any pictures on the wall.
=There are no pictures on the wall.
②There is a bike behind the tree.
→There isn't a bike behind the tree.
=There is no bike behind the tree.
2岖妄、變成一般疑問句
There be句型的一般疑問句變化是把be動詞調(diào)整到句首型将，再在句尾加上問號即可。
但同時要注意：當(dāng)肯定句中有some時荐虐，要將其改為any（否定變化也一樣）七兜。
①There is some water on Mars.
→ Is there any water on Mars?
②There are some fish in the water.
→Are there any fish in the water?
考點(diǎn)二：there be 句型的時態(tài)。
be可以有現(xiàn)在時（there is/are）
過去時(there was/were)
將來時(there is/are going to be或there will be)
