题目内容：
根据题目要求，完成下列任务，用中文作答。 以下片段选自某课堂实录。请分析该教学片段并回答下列问题：
(1)该教师采用什么方法授课?
(2)这些方法有什么利弊?
T: Look. It's a rainbow. Oh, it's beautiful! What colour do you like? I like purple.
SI: I like yellow. pears
(T: What are they?
Ss: Pears.
T: How many pears can you see? Ss: I can see ...
T: Do you like pears?
Ss: Yes, I do./No, I don't.)
$2: I like green. --watermelons
$3: I like orange. --oranges
T: Look, I like pink. Can you guess? What are they?
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