Sally could recite all the poems in the book in her childhoo

1. could可以换写成was able to,in her childhood可以改写成when she was a child
以上两种变化组合即可得到四种同义句.
2. become
made是使役动词make的过去式,而Ang Lee（李安）为宾语,后面则是宾语补足语.
而make的宾语补足语如果使用动词,且宾语Ang Lee和宾补动词become之间为主动关系,此时只能使用不带to的不定式即动词原形become做宾语补足语.
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