1、Is that a grey pencil?(作否定回答 ) 2、This is （a tiger).(对括号部分提

1、Is that a grey pencil?(作否定回答 ) 2、This is （a tiger).(对括号部分提 is that helen is pencil（作否定回答） a white eraser（对它提问） is this 对括号部分提问:That is (a pencil sharp enet) 1、this is a pencil box.(改为一般疑问句，并作否定回答) This is a pencil box改为一般疑问句 并作肯定及否定回答 ls that a pencil作否定回答 This is a tiger否定句.Is that a fial肯定句.Is t 对括号部分提问：1.The small cat is (shy and cut) .2.This tiger is (a 1That is a book.(改为一般疑问句,并作否定回答） This is my dictionary.(改为一边 This is a pencil box.对a pencil box 提问 This is a pencil box.(对” a pencil box”提问 ) is that a pencil